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Executive summary of the Stages of Reproductive Aging Workshop + 10: addressing the unfinished agenda of staging reproductive aging (2012)


The 2001 Stages of Reproductive Aging Workshop (STRAW) proposed nomenclature and a staging system for ovarian aging including menstrual and qualitative hormonal criteria to define each stage (1–4). The STRAW staging system is widely considered the gold standard for characterizing reproductive aging through menopause, just as the Marshall-Tanner Stages characterize pubertal maturation (5). Research conducted during the past 10 years has advanced knowledge of the critical changes in hypothalamic-pituitary and ovarian function that occur before and after the final menstrual period. These advances were the topic of a follow-up workshop ‘‘STRAW + 10: Addressing the Unfinished Agenda of Staging Reproductive Aging’’ (STRAW + 10). STRAW + 10, held in Washington, DC, on September 20 and 21, 2011, reviewed these scientific advances and updated the STRAW criteria. The sponsors were the National Institute on Aging (NIA) and Office of Research on Women's Health (ORWH) of the National Institutes of Health, The North American Menopause Society (NAMS), the American Society for Reproductive Medicine (ASRM), the International Menopause Society (IMS), and the Endocrine Society. The STRAW + 10 workshop achieved the following aims:

  1. To reevaluate criteria for the onset of late reproductive life and early menopausal transition, given new populationbased data relating to follicle-stimulating hormone (FSH), antral follicle count (AFC), antim€ullerian hormone (AMH), and inhibin-B;
  2. To reevaluate criteria for staging postmenopause, given new population-based data on changes in FSH and estradiol concentrations after the final menstrual period (FMP);
  3. To reevaluate applicability to women based on variations in body size, lifestyle characteristics, and health status; and
  4. To identify remaining gaps in scientific knowledge and research priorities.


BACKGROUND AND SIGNIFICANCE

The menopausal transition marks a period of physiologic changes as women approach reproductive senescence. Evidence supports the clinical importance of the transition for many women as a period of temporal changes in health and quality of life (ie, vasomotor symptoms, sleep disturbance, depression) and longer-term changes in several health outcomes (ie, urogenital symptoms, bone, lipids) (6–15) that may influence women's quality of life and the likelihood of healthy aging. As a standardized staging system for reproductive aging, STRAW made a substantial contribution to women's health research by providing consistent classification of menopause status for studies of midlife women. Importantly, STRAW facilitated research that aimed to distinguish the health effects of ovarian versus somatic aging. The STRAW staging system also serves as a clinical tool for women and their healthcare providers to guide the assessment of fertility, contraceptive needs, and healthcare decision making (16, 17).

Building upon previous consensus meetings of the World Health Organization and the Council of Affiliated Menopause Societies (18), STRAW reevaluated nomenclature, proposed a standardized staging system, and recommended criteria for defining the onset of each stage. STRAW participants evaluated potential criteria including menstrual cycles; endocrinologic parameters including FSH, estradiol, AMH, and inhibin-B; symptoms; fertility; and ovarian imaging including AFC. Of the candidate biomarkers considered in 2001, only FSH was consistently measurable in a clinical setting. Data were insufficient to define quantitative criteria for FSH or to clarify the precise timing of change in FSH levels. Information on AFC and on the relationship among AMH, inhibin-B, and the timing of ovarian aging was limited. Symptoms were considered to be subjective and acknowledged not to be universally experienced. STRAW therefore restricted staging recommendations to menstrual cycle bleeding criteria and qualitative FSH criteria.


Seven Stages of the 2001 STRAW Staging System

STRAW divided the adult female life into three broad phases: reproductive, the menopausal transition, and postmenopause. These three phases included a total of seven stages centered on the FMP (Stage 0) (1–4). The reproductive phase was divided into Stages –5, –4, and –3 corresponding to early, peak, and late, respectively. The menopausal transition phase consisted of Stage –2 (early) and Stage –1 (late), and the postmenopause phase contained Stages +1 (early) and +2 (late). Stage –3 was characterized by regular menstrual cycles and increasing levels of FSH. Stage –2 was characterized by variability in menstrual cycle length and increased levels of FSH. Stage –1 was characterized by onset of skipped cycles or amenorrhea of at least 60 days and continued elevation of FSH.


The ReSTAGE Collaboration

The ReSTAGE Collaboration subsequently conducted empirical analyses to assess the validity and reliability of the 2001 STRAW's original menstrual cycle criteria in four cohort studies—the TREMIN study, theMelbourneWomen's Midlife Health Project, the Seattle Midlife Women's Health Study, and the Study of Women's Health Across the Nation (SWAN). Findings supported STRAW's recommendations, provided more precise specification of menstrual criteria for early and late transition, and recommended a quantitative cutpoint for FSH levels characteristic of the late transition (19–22).


Generalizability

A limitation of the original STRAW was its recommendation, based on the available evidence, that the staging system only be applied to healthy women. STRAW explicitly recommended against applying the criteria to seven subgroups of women (1–4), including smokers (19% of US women aged 45–64 y [23]), women with a body mass index (BMI) greater than 30 kg/m2 (38% of US women [24]), and women who had undergone hysterectomy (35% of US women [25]). Women engaged in heavy aerobic exercise and women with chronic menstrual cycle irregularities, uterine abnormalities or ovarian abnormalities, or significant illness such as cancer were also excluded. Another limitation of the 2001 STRAW was the lack of insight regarding the applicability of the staging system in diverse populations. In 2001, few data were available from studies of multiethnic or diverse socioeconomic populations. Recent data from multiethnic cohorts now permit the assessment of generalizability (17, 22, 26–33), although data from low-resource countries remain quite limited (34, 35).

STRAW had a sustained influence on research in the field, prompting the assessment of trajectories of change in endocrine levels and biomarkers of ovarian senescence as well as the evaluation of how these trajectories vary by body size, smoking, ethnicity, and other factors (26–33, 36–55). Ten years later, the understanding of ovarian aging and its endocrine and clinical correlates has advanced considerably, providing a more nuanced and comprehensive understanding of the critical junctures that occur during reproductive aging before and after the FMP. For example, Figure 1 illustrates changes in mean FSH and estradiol concentrations in relation to time before and after the FMP in the SWAN cohort (22). The role of AMH and inhibin-B as markers of declining fertility and ovarian aging is more clearly understood, as are the relationships among patterns of decline in AMH, inhibin-B, AFC, and primordial follicle counts (26, 37, 38, 42, 43, 45–48, 51, 53, 56–58). The goal of the STRAW + 10 was to review significant advances in the field and develop recommendations for updating the original STRAW criteria.

Figure 1


executive-summary-of-the-stages-of-reproductive-aging-workshop-figure-1.png

MATERIALS AND METHODS

STRAW + 10 involved a 2-day in-person meeting hosted at the 2011 Annual Meeting of NAMS. On the first day, international experts gave oral presentations reviewing recent data bearing on the goals, as part of a public symposium, followed by comments and discussion from the audience. The first two sessions focused on data from prospective cohort studies of midlife women; clinical findings related to changes in patterns and levels of menstrual, endocrine, and ovarian markers of reproductive aging; and data relevant to how these trajectories vary by ethnicity, body size, and smoking status. A particular focus was on patterns of change in AMH, inhibin-B, FSH, estradiol, and AFC and their interrelationships. A third session focused on emerging evidence related to staging reproductive aging in the context of cancer treatment, chronic illness including cancer and human immunodeficiency virus (HIV)–acquired immunodeficiency syndrome (AIDS), and endocrine disorders including polycystic ovary syndrome (PCOS) and primary ovarian insufficiency (POI, otherwise known as premature ovarian failure). At the end of day 1, a panel reviewed and the participants discussed modifications that had been proposed by symposium speakers. STRAW + 10 explicitly considered the feasibility of applying criteria in low-resource countries.

Subsequently, 41 scientists convened to develop consensus and propose modifications to the STRAW staging system. These participants had clinical and/or research experience in female reproductive aging and included scientists from several key research groups in the United States, Canada, Australia, the Netherlands, and South Africa, as well as representatives from National Institutes of Health–funded cohort studies of midlife women that have biologic samples (59) including the SWAN, Michigan Bone Health and Metabolism Study, Seattle Midlife Women's Health Study, Biodemographic Models of Reproductive Aging, and the Penn Ovarian Aging Study as well as the Australian Melbourne Women's Midlife Health Project and junior investigators who submitted qualifying posters.

Three breakout groups were formed based on scientific expertise and interest. Group 1 reviewed criteria for STRAW Stages –4 to –2. Group 2 reviewed criteria for STRAW Stages –1 to +2. Each of these two groups was subdivided into two subgroups and assigned a rapporteur. Each subgroup proposed modifications to the STRAW paradigm separately, considering criteria for the relevant stages in healthy women and the weight of evidence concerning the appropriateness of applying these criteria to smokers and women regardless of body size. Each subgroup then reviewed the recommendations of the other subgroup and discussed points of disagreement until consensus was reached. Group 3 discussed staging in the context of endocrine disorders and chronic illness and proposed modifications.

On the second day, the scientists reconvened to review and discuss proposed modifications to the STRAW staging system. First, Group 1 and Group 2 reviewed the other group's recommendations. In this way, all groups reviewed all stages under consideration (Stages –4 to +2). Afterward, the group-at-large met to discuss each proposal, and final recommendations were adopted by consensus. Points of disagreement were discussed until consensus was achieved on common principles. In general, disagreements reflected points for which data was not yet adequate to make a recommendation. Preliminary recommendations of the STRAW + 10 were presented at the NAMS annual meeting on September 22, with comments and requests for clarification considered by the STRAW + 10 program committee.


RESULTS

STRAW + 10 retained the criteria for an ideal staging system used by the 2001 Workshop. Therefore, a staging system should:

  1. Rely primarily on objective data;
  2. Use widely available, reliable, noninvasive, and inexpensive tests;
  3. Allow for prospective classification of women; and
  4. Permit unambiguous classification of women into a unique stage.

In addition, it was concluded that the modified staging system should:

  1. Retain the same widely accepted nomenclature;
  2. Consider menstrual cycle criteria to remain the most important criteria given the continuing lack of international standardization of biomarker assays as well as their cost and/or invasiveness, particularly in the context of resource-poor countries;
  3. Consider biomarker criteria as supportive criteria given the lack of assay standardization (supportive criteria are to be used only as necessary and should not be interpreted as required for diagnosis); and
  4. Use criteria that are independent of age, symptoms, and pathology (because no universal menopausal syndrome has been established across ethnic groups (60), two key symptoms are incorporated only as descriptive additional information that may support other criteria in assessing stage [61]).


The revised STRAW + 10 Staging System is presented in Figure 2. STRAW + 10 recommended the acceptance of the ReSTAGE Collaboration's more precise and simplified specification of the menstrual cycle criteria for the early and late menopausal transition and concurred with ReSTAGE recommendations that the quantification of the FSH criteria in Stage –1 is possible given the improved standardization of this assay and additional population-based data. In addition, STRAW + 10 recommended modifications to the criteria for the late reproductive stage (Stage –3) as well as the early postmenopause stage (Stage +1) and provided information on the duration of the late transition (Stage –1) and early postmenopause (Stage +1) stages. Although additional biomarkers, especially AMH and AFC, have considerable promise, the lack of standardized assays and data from noninfertility populations remain important limitations to their incorporation into the STRAW staging system and their utility as clinical tools for staging reproductive aging. Nonetheless, the revised STRAW + 10 Staging System includes qualitative criteria for these biomarkers during the late reproductive life when relative changes in these parameters have important consequences for fertility potential.

Figure 2


Executive-summary-of-the-Stages-of-Reproductive-Aging-Workshop-Figure 2.png

Definition and Rationale for Key Revisions to the Staging Criteria

Late reproductive stage (Stage –3). The late reproductive stage marks the time when fecundability begins to decline and during which a woman may begin to notice changes in her menstrual cycles. Given that critical endocrine parameters begin to change before overt changes in menstrual cyclicity and that these endocrine changes are important to fertility assessments, STRAW + 10 recommended that the late reproductive stage be subdivided into two substages (-3b and -3a). In Stage –3b, menstrual cycles remain regular without change in length or early follicular phase FSH levels; however, AMH and antral follicle counts are low. Most but not all studies (53, 62, 63) suggest that inhibin-B is also low. In Stage -3a, subtle changes in menstrual cycle characteristics, specifically shorter cycles (64–66), begin. Early follicular phase (cycle days 2–5) FSH increases and becomes more variable, with the other three markers of ovarian aging being low. The lack of standardized AMH assays prevented the development of quantitative recommendations for this biomarker.

Early menopausal transition (Stage –2). Early menopausal transition is marked by increased variability in menstrual cycle length, defined as a persistent difference of 7 days or more in the length of consecutive cycles. Persistence is defined as recurrence within 10 cycles of the first variable length cycle. Cycles in the early menopausal transition are also characterized by elevated but variable early follicular phase FSH levels and low AMH levels and AFC.

Late menopausal transition (Stage –1). The late menopausal transition is marked by the occurrence of amenorrhea of 60 days or longer. Menstrual cycles in the late menopausal transition are characterized by increased variability in cycle length, extreme fluctuations in hormonal levels, and increased prevalence of anovulation. In this stage, FSH levels are sometimes elevated into the menopausal range and sometimes within the range characteristic of the earlier reproductive years, particularly in association with high estradiol levels. The development of international standards and the availability of substantive population-based data now permit the definition of quantitative FSH criteria, with levels greater than 25 IU/L in a random blood draw characteristic of being in late transition, based on current international pituitary standards that approximate more than 40 IU/L in the previously used urine-based gonadotropin standards (67–69). Empirical analyses should be undertaken to confirm this recommendation, and researchers and clinicians should carefully evaluate the appropriate FSH value, depending on the assay they use. Based on studies of menstrual calendars and on changes in FSH and estradiol, this stage is estimated to last, on average, 1 to 3 years. Symptoms, most notably vasomotor symptoms, are likely to occur during this stage.

Early postmenopause (Stage +1a, +1b, +1c). New data on the trajectories of change in mean levels of FSH and estradiol (22, 30, 32, 40, 41, 52, 54, 55) indicate that FSH continues to increase and that estradiol continues to decrease until approximately 2 years after the FMP, after which the levels of each of these hormones stabilize. Therefore, STRAW + 10 recommended that early postmenopause be subdivided into three substages (+1a, +1b, and +1c).

Stages +1a and +1b each last 1 year and end at the time point at which FSH and estradiol levels stabilize. Stage +1a marks the end of the 12-month period of amenorrhea required to define that the FMP has occurred. It corresponds to the end of ‘‘perimenopause,’’ a term still in common usage that means the time around menopause and begins at Stage -2 and ends 12 months after the FMP. Stage +1b includes the remainder of the period of rapid changes in mean FSH and estradiol levels. Based on studies of hormonal changes, Stages +1a and +1b together are estimated to last, on average, 2 years. Symptoms, most notably vasomotor symptoms, are most likely to occur during this stage.

Stage +1c represents the period of stabilization of high FSH levels and low estradiol values that is estimated to last 3 to 6 years; therefore, the entire early postmenopause lasts approximately 5 to 8 years. Further specification of this stage will require additional studies of trajectories of change in FSH and estradiol from the FMP through the late postmenopause.

Late postmenopause (Stage +2).
Stage +2 represents the period in which further changes in reproductive endocrine function are more limited and processes of somatic aging become of paramount concern. Symptoms of vaginal dryness and urogenital atrophy become increasingly prevalent at this time (7, 70–72). However, many years after menopause, it has been observed that there may be a further decline in levels of FSH in very old persons (73, 74); future studies will be needed to determine whether an additional stage is warranted near the end of life.


Inclusiveness of the STRAW + 10 Criteria

Evidence now supports the applicability of the STRAW + 10 recommendations for most women. Epidemiologic and clinical studies have documented that the process of reproductive aging, although influenced by demographic factors, lifestyle, and BMI, follows a robust and predictable pattern (22, 26, 27, 32, 33, 41, 75). Although smoking and BMI influence hormonal levels and the timing of transition, these factors do not alter the trajectory of change in bleeding patterns or hormonal levels with reproductive aging. Therefore, the STRAW + 10 staging system is applicable to women regardless of age, demographic, BMI, or lifestyle characteristics.

The STRAW + 10 model does not use age as a criterion for determining reproductive staging. However, women meeting the criteria for POI/premature ovarian failure (age <40 y with 4 mo of amenorrhea and two serum FSH levels [at least a month apart] in the menopausal range) do not easily fit into this model. The course of reproductive aging in women with POI/premature ovarian failure seems to be considerably more variable than that of women with normal reproductive aging. Not only are there several potential etiologies but also a substantial proportion of women have spontaneous resumption of menstrual function once the diagnosis has been confirmed, including ovulation and successful spontaneous pregnancy (76). Additional research is needed to better document the process of ovarian aging in these women and whether the course of ovarian aging differs by etiology of POI. Studies of reproductive aging in POI are considered to be a research priority.


Hysterectomy and Endometrial Ablation

Women who have undergone hysterectomy or endometrial ablation cannot be staged by menstrual bleeding criteria (77). Reproductive stage in these women can only be assessed using the supportive criteria, that is, the endocrine markers of ovarian aging. It is recommended that clinicians and researchers wait at least 3 months after surgery to assess endocrine status, given emerging evidence that pelvic surgeries may transiently raise FSH levels (78–81). Further research on the nature and duration of alterations in biomarkers of ovarian aging secondary to pelvic surgery is warranted. In most cases, staging will be limited to the classification of whether such women are premenopausal or postmenopausal. A single sample for measurement of FSH and estradiol may be ambiguous or misleading, and at least one repeated measurement is often required.


Polycystic Ovary Syndrome

Women with PCOS frequently experience oligomenorrhea that is not attributable to ovarian aging. Therefore, the current menstrual cycle criteria used to stage reproductive aging are not applicable to this population. Understanding of the changes occurring before menopause in this group of women is limited. Some data suggest that women with PCOS may experience a later age at menopause (48, 82), as well as more regular cycles with reproductive aging (83, 84); however, the experience of reproductive aging in PCOS is not well understood. Similarly, menstrual cycle criteria are not applicable in women with hypothalamic amenorrhea. Studies of reproductive aging in these subgroups of women are considered to be a research priority.


Women with Chronic Illness Undergoing Chemotherapy

Many medications and loss of body fat can cause amenorrhea, which can make the staging of the menopausal transition difficult. Several important subgroups remain difficult to stage yet deserve attention in any staging system (38, 56, 85–88). Depending on the age at treatment and cancer treatment type, a significant proportion of women who undergo cancer treatment, particularly with alkylating agents, may experience transient increases in FSH and decreases in AMH and AFC with return of bleeding even after 12 months or more of amenorrhea (38, 56, 87–89). In these women, resumption of menstrual cycles may not indicate a return of normal menstrual function. Women undergoing treatment with tamoxifen pose an additional problem because FSH and estradiol levels may be altered by this treatment and may therefore be misleading and cause abnormal bleeding (90). Women with chronic illnesses such as HIV–AIDS also pose a problem in the staging of reproductive aging because of the lack of reliability of bleeding patterns and hormonal markers (85, 86). Staging in these women will require assessment with menstrual cycle criteria, the supportive criteria using relevant biomarkers, and age to better characterize their ovarian function. Large prospective cohort studies are needed to better characterize the trajectories of ovarian aging in these populations.


CONCLUSIONS AND RESEARCH PRIORITIES

STRAW + 10 revised and extended the STRAW recommendations to include additional criteria for defining specific stages of reproductive life. The revised staging system provides a more comprehensive basis for classification and assessment, from the late reproductive stage through the menopausal transition and into postmenopause. Its application should improve comparability of studies of midlife women by establishing clear criteria for ascertaining women's reproductive stage. The STRAW + 10 recommendations are expected to improve guidance for classifying the ovarian status of midlife women in the research setting while advancing efforts to translate this new science for clinicians and women. Although scientific understanding of ovarian aging has advanced considerably in the last decade, important gaps in scientific knowledge persist. The workshop participants identified seven research priorities.

  1. Lack of standardized assays for key biomarkers remains an important limitation in efforts to stage reproductive aging and to translate research findings to cost-effective clinical tools. Given the importance of AMH in relation to fertility and its relative stability across the menstrual cycle, the development of an international standard for the assessment of AMH is of paramount importance.
  2. Empirical analysis across multiple cohorts is needed to specify precise menstrual cycle criteria for Stages –3b and –3a.
  3. Studies are needed to characterize the hormonal changes of postmenopause from Stage +1 to +2 because data across these stages are limited; several cohort studies are well positioned to provide this information. The development of highly sensitive, well characterized assays is needed.
  4. Given that the large cohort studies of midlife women were initiated before the STRAW staging system was developed, these cohorts should be supported to apply the STRAW + 10 staging criteria to reanalyze key findings on the clinical changes that occur across the menopausal transition.
  5. Improved characterization of the pattern, timing, and level of reproductive biomarkers across nations is necessary, especially to provide data on the experience of women from low-resource countries.
  6. Research is needed to better understand the process of reproductive aging and appropriate staging criteria for women with PCOS and POI and those who have had removal of a single ovary and/or hysterectomy.
  7. Research is needed to better evaluate staging in women with chronic illness such as HIV infection and those undergoing cancer treatment.


SUMMARY

STRAW + 10 simplified bleeding criteria for the early and late menopausal transition, recommended modifications to criteria for the late reproductive and the early postmenopause stages, provided information on the duration of the late transition and early postmenopause, and recommended application regardless of women's age, ethnicity, body size, or lifestyle characteristics. Seven research priorities are identified.

Acknowledgments: STRAW + 10 In Memoriam: MaryFran Sowers, Ph.D., University of Michigan.


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  48. Mulders AG, Laven JS, Eijkemans MJ, de Jong FH, Themmen AP, Fauser BC. Changes in anti-Mullerian hormone serum concentrations over time suggest delayed ovarian ageing in normogonadotrophic anovulatory infertility. Hum Reprod 2004;19:2036–42.
  49. O'Connor KA, Ferrell R, Brindle E, Trumble B, Shofer J, Holman DJ, et al. Progesterone and ovulation across stages of the transition to menopause. Menopause 2009;16:1178–87.
  50. O'Connor KA, Ferrell RJ, Brindle E, Shofer J, Holman DJ, Miller RC, et al. Total and unopposed estrogen exposure across stages of the transition to menopause. Cancer Epidemiol Biomarkers Prev 2009;18:828–36.
  51. Robertson DM. Anti-Mullerian hormone as a marker of ovarian reserve: an update. Womens Health (Lond Engl) 2008;4:137–41.
  52. Robertson DM, Hale GE, Jolley D, Fraser IS, Hughes CL, Burger HG. Interrelationships between ovarian and pituitary hormones in ovulatory menstrual cycles across reproductive age. J Clin Endocrinol Metab 2009;94:138–44.
  53. Sowers MR, Eyvazzadeh AD, McConnell D, Yosef M, Jannausch ML, Zhang D, et al. Anti-mullerian hormone and inhibin B in the definition of ovarian aging and the menopause transition. J Clin Endocrinol Metab 2008;93:3478–83.
  54. Sowers MR, Zheng H, McConnell D, Nan B, Harlow S, Randolph JF Jr. Follicle stimulating hormone and its rate of change in defining menopause transition stages. J Clin Endocrinol Metab 2008;93:3958–64.
  55. Sowers MR, Zheng H, McConnell D, Nan B, Harlow SD, Randolph JF Jr. Estradiol rates of change in relation to the final menstrual period in a population-based cohort of women. J Clin Endocrinol Metab 2008;93:3847–52.
  56. Su HI, Sammel MD, Green J, Velders L, Stankiewicz C, Matro J, et al. Antimullerian hormone and inhibin B are hormone measures of ovarian function in late reproductive-aged breast cancer survivors. Cancer 2010;116:592–9.
  57. van Disseldorp J, Faddy MJ, Themmen AP, de Jong FH, Peeters PH, van der Schouw YT, et al. Relationship of serum antimullerian hormone concentration to age at menopause. J Clin Endocrinol Metab 2008;93:2129–34.
  58. van Rooij IA, Broekmans FJ, Scheffer GJ, Looman CW, Habbema JD, de Jong FH, et al. Serum antimullerian hormone levels best reflect the reproductive decline with age in normal women with proven fertility: a longitudinal study. Fertil Steril 2005;83:979–87.
  59. Ferrell RJ, Sowers M. Longitudinal, epidemiologic studies of female reproductive aging. Ann N Y Acad Sci 2010;1204:188–97.
  60. Avis NE, Brockwell S, Randolph JF Jr, Shen S, Cain VS, Ory M, et al. Longitudinal changes in sexual functioning as women transition through menopause: results from the Study of Women's Health Across the Nation. Menopause 2009;16:442–52.
  61. Avis NE, Zhao X, Johannes CB, Ory M, Brockwell S, Greendale GA. Correlates of sexual function among multi-ethnic middle-aged women: results from the Study of Women's Health Across the Nation (SWAN). Menopause 2005;12:385–98.
  62. Welt CK, McNicholl DJ, Taylor AE, Hall JE. Female reproductive aging is marked by decreased secretion of dimeric inhibin. J Clin Endocrinol Metab 1999;84:105–11.
  63. Robertson DM, Hale GE, Fraser IS, Hughes CL, Burger HG. A proposed classification system for menstrual cycles in the menopause transition based on changes in serum hormone profiles. Menopause 2008;15:1139–44.
  64. Johannes CB, Crawford SL, Longcope C, McKinlay SM. Bleeding patterns and changes in the perimenopause: a longitudinal characterization of menstrual cycles. Clin Consult Obstet Gyncecol 1996;8:9–20.
  65. Mitchell ES, Woods NF, Mariella A. Three stages of the menopausal transition from the Seattle Midlife Women's Health Study: toward a more precise definition. Menopause 2000;7:334–49.
  66. Van Voorhis BJ, Santoro N, Harlow S, Crawford SL, Randolph J. The relationship of bleeding patterns to daily reproductive hormones in women approaching menopause. Obstet Gynecol 2008;112:101–8.
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  70. Dennerstein L, Dudley E, Burger H. Are changes in sexual functioning during midlife due to aging or menopause? Fertil Steril 2001;76:456–60.
  71. Stiles M, Redmer J, Paddock E, Schrager S. Gynecologic issues in geriatric women. J Womens Health (Larchmt) 2012;21:4–9.
  72. Woods NF, Mitchell ES. Symptoms during the perimenopause: prevalence, severity, trajectory, and significance in women's lives. Am J Med 2005;118:14–24.
  73. Hall JE. Neuroendocrine physiology of the early and late menopause. Endocrinol Metab Clin North Am 2004;33:637–59.
  74. Hall JE, Lavoie HB, Marsh EE, Martin KA. Decrease in gonadotropin-releasing hormone (GnRH) pulse frequency with aging in postmenopausal women. J Clin Endocrinol Metab 2000;85:1794–800.
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  80. Qu X, Cheng Z, Yang W, Xu L, Dai H, Hu L. Controlled clinical trial assessing the effect of laparoscopic uterine arterial occlusion on ovarian reserve. J Minim Invasive Gynecol 2010;17:47–52.
  81. Sezik M, Ozkaya O, Demir F, Sezik HT, Kaya H. Total salpingectomy during abdominal hysterectomy: effects on ovarian reserve and ovarian stromal blood flow. J Obstet Gynaecol Res 2007;33:863–9.
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  83. Elting MW, Korsen TJ, Rekers-Mombarg LT, Schoemaker J. Women with polycystic ovary syndrome gain regular menstrual cycles when ageing. Hum Reprod 2000;15:24–8.
  84. Elting MW, Kwee J, Korsen TJ, Rekers-Mombarg LT, Schoemaker J. Aging women with polycystic ovary syndrome who achieve regular menstrual cycles have a smaller follicle cohort than those who continue to have irregular cycles. Fertil Steril 2003;79:1154–60.
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APPENDIX: STRAW + 10 PROGRAM COMMITTEE

Siobán D. Harlow, Ph.D., Program Chair, Professor, Department of Epidemiology, University of Michigan
Margery Gass, M.D., N.C.M.P., Executive Director, The North American Menopause Society
Janet E. Hall, M.D., President, The Endocrine Society; Professor, Department of Medicine, Harvard Medical School
Roger Lobo, M.D., President, American Society of Reproductive Medicine, Professor, Department of Obstetrics and Gynecology, Columbia University
Pauline Maki, Ph.D., Professor, Departments of Psychiatry and Psychology, University of Illinois
Robert W. Rebar, M.D., Executive Director, American Society for Reproductive Medicine
Sherry Sherman, Ph.D., National Institute on Aging
Tobie J. de Villiers, M.B.Ch.B., F.R.C.O.G., F.C.O.G.(SA), President, International Menopause Society (South Africa)

STRAW + 10 COLLABORATIVE GROUP

Susan E. Appt, D.V.M., Wake Forest School of Medicine (United States); Valerie L. Baker, M.D., Stanford University (United States); Frank J. Broekmans, M.D., Ph.D., University Medical Center Utrecht (Netherlands); Marcelle I. Cedars, M.D., Ruth Greenblatt, M.D., University of California at San Francisco (United States); Sybil Crawford, Ph.D., Lynnette L. Sievert, Ph.D., University of Massachusetts (United States); Lorraine Dennerstein, M.D., University of Melbourne  (Australia); Ellen W. Freeman, Ph.D., Mary Sammel, ScD, University of Pennsylvania (United States); Marjorie Gass, M.D., N.C.M.P., The North American Menopause Society (United States); Georgina Hale, M.D., Ph.D., University of Sydney (Australia); Janet E. Hall, M.D., Harvard Medical School (United States); Karl R. Hansen, M.D., Ph.D., University of Oklahoma (United States); Sioban D. Harlow, Ph.D., Rod Little, Ph.D., Pangaja Paramsothy, M.P.H., John F. Randolph, M.D., University of Michigan (United States); Nicole Jaff, NCMP, Ph.D., Research Fellow, University of the Witwatersrand (South Africa) Hadine Joffe, M.D. M.Sc., Jan Shifren, M.D., Patrick M. Sluss, Ph.D., Massachusetts General Hospital (United States); Roger Lobo, M.D., Michelle Warren, M.D., Columbia University (United States); Pauline Maki, Ph.D.,  Professor, University of Illinois (United States); Kathleen O'Connor, Ph.D., Nancy Fugate Woods, R.N., Ph.D., University of  Washington (United States); Robert Rebar, M.D., American Society for Reproductive Medicine (United States); Gloria Richard-Davis, M.D., Meharry Medical College (United States); David M. Robertson Ph.D., Prince Henry's Institute of Medical Research, Monash University (Australia); Sherry Sherman, Ph.D., National Institute on Aging (United States); Claudio N. Soares, M.D., Ph.D., McMaster University (Canada); H. Irene Su, M.D., University of California at San Diego (United States); Josefina Romaguera, M.D., M.P.H., University of Puerto Rico (Puerto Rico); Wulf Utian, M.D., Case Western Reserve School of Medicine (United States); Heidi VandenBrink, University of Saskatchewan (Canada); Tobie J. de Villiers, M.B.Ch.B., F.R.C.O.G., F.C.O.G.(SA), International Menopause Society (South Africa); Miriam T. Weber, Ph.D.,
University of Rochester (United States); Melissa F. Wellons, M.D., University of Alabama (United States).

Practice Documents

ASRM Practice Documents have been developed to assist physicians with clinical decisions regarding the care of their patients.
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Maternal cardiovascular morbidity and mortality associated with pregnancy in individuals with Turner syndrome: a committee opinion (2024)

In individuals with Turner syndrome, the risk of death from aortic dissection or rupture during pregnancy may be as high as 1%, and it is unclear whether this risk persists during the postpartum period owing to pregnancy-related aortic changes. 
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Hormonal contraception aids in the timing of ART cycles, reduce ovarian cysts at IVF cycle initiation, and optimize visualization before hysteroscopy.

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This resource includes phrases shared by ASRM physician members to provide a template for individuals to create their own EMR phrases.

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The Coding Corner Q & A is a list of previously submitted and answered questions from ASRM members about coding. Answers are available to ASRM Members only.

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Patient Resources

ReproductiveFacts.org provides a wide range of information related to reproductive health and infertility through patient education fact sheets, infographics, videos, and other resources.

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Topic Resources

View more on the topic of menopause
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Best practices of ASRM and ESHRE: a journey through reproductive medicine (2012)

ASRM and ESHRE are the two largest societies in the world whose members comprise the major experts and professionals working in reproductive medicine. View the Committee Joint Guideline
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A decade after the Women's Health Initiative—the experts do agree (2012)

This year marks the 10th anniversary of the 2002 presentation of the results of the Women's Health Initiative hormone trials. View the Committee guideline
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Executive summary of the Stages of Reproductive Aging WorkshopD10: addressing the unfinished agenda of staging reproductive aging (2012)

The aim of this article is to summarize the recommended updates to the 2001 Stages of Reproductive Aging Workshop (STRAW) criteria. View the Committee Guideline
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The MOISIG promotes the study of normal and pathologic ovarian aging, ovarian responsiveness and postmenopausal health. It also advocates and provides a forum for the exchange of ideas on topics related to menopause, diminished ovarian reserve, primary ovarian sufficiency, and poor ovarian responders. Learn more about the MOISIG

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View more on the topic of ovulation drugs
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Fertility drugs and cancer: a guideline (2024)

Methodological limitations in studying the association between the use of fertility drugs and cancer include the inherent increased risk of cancer in women who never conceive, the increased risk of cancer because of factors (endometriosis and unopposed estrogen) associated with infertility, the low incidence of most of these cancers, and that the diagnosis of cancer is typically several years after fertility drug use. View the Committee Guideline
Coding Icon

Pregnancy Test

What is the best code to use for a pregnancy test (beta HCG) after treatment for infertility by IUI with or without clomiphene or injectable gonadotropins? View the Answer
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Medication Teaching and/or Administration

I see in the coding corner it is recommended that CPT code 99211 be used for education and teaching for injectable medications. View the Answer
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Use of exogenous gonadotropins for ovulation induction in anovulatory women: a committee opinion (2020)

Pretreatment evaluation, indications, treatment regimens, and complications of gonadotropin treatment. View the Committee Opinion

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Articles this month include: predicting ART complications, laser assisted hatching on vitrified blastocysts, predictive models of miscarriage and more.
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Intro to REI Ultrasound

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Fertility and Sterility On Air - TOC: June 2024

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When a patient has a cyst from a previous Clomid or gonadotropin cycle, is it appropriate to bill the insurance company for the ultrasound with a N83.x? View the Answer
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When a patient is scheduled to undergo IVF and the provider schedules the patient for a 30-minute consultation is this visit billable? View the Answer
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We are planning to open an IVF lab that is not contracted with insurance companies. View the Answer
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Should one bill oocyte aspiration as a bilateral procedure? View the Answer
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Best practices of ASRM and ESHRE: a journey through reproductive medicine (2012)

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Abdominal Paracentesis

We do a lot of abdominal paracenteses on patients at our facility.  View the answer