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. Author manuscript; available in PMC: 2013 Nov 1.
Published in final edited form as: Fertil Steril. 2012 Aug 24;98(5):1254–1259.e2. doi: 10.1016/j.fertnstert.2012.07.1139

Table 3.

Median Time to Menopause by AMH Level, AMH Rate of Change and Age

AMH BASELINE AMH CHANGE1 Ages 35–39 Ages 40–44 Ages 45–48
N Median time2 95% CI N Median time2 95% CI N Median time2 95% CI
Low <1.0 ng/mL Fast 18 10.12 5.93 – NA3 37 8.83 8.01 – 9.81 29 7.99 6.26 – 8.69
Slow 30 12.67 10.58 – 12.84 37 9.47 8.61 – 10.26 4 8.60 5.03 – 10.27
High ≥1.0 ng/mL Fast 20 12.26 8.85 – 13.01 39 10.29 9.12 – 11.13 3 8.00 6.23 – NA3
Slow 56 NA4 ------ 20 12.76 9.40 – NA3 0 NA4 ------

N=293

1

Rate of change is calculated as the difference between the first undetectable level or the last detectable value of log AMH and log AMH baseline level per year. The rate of AMH change is divided at the sample median; below the median (slow change) is the reference group.

2

Median time to menopause (yrs) from Kaplan-Meier estimates.

3

No upper confidence limit due to continuing follow-up.

4

Estimate uninterpretable due to insufficient number reaching menopause.