Table 4.

Pregnancy and live birth rates per patient years by attained age.

	Non-surgical premature menopause
	Yes					No
	Person-years	# pregnancies	Pregnancy rate per 1000PY	# Live births	Live birth rate per 1000PY	Person-years	# pregnancies	Pregnancy rate per 1000PY	# live births	Live birth rate per 1000PY
Ages 21 to 25	452	46	101.9	29	64.2	12179	1172	96.2	770	63.2
Ages 26 to 30	364	44	120.9	29	79.7	9223	1223	132.6	899	97.5
Ages 31 to 35	242	10	41.4	6	24.8	5955	642	107.8	485	81.4
Ages 36 to 40	60	3	50.3	2	33.5	2833	194	68.5	117	41.3
Ages 21 to 30	816	90	110.3	58	71.1	21402	2395	111.9	1669	78.0
Ages 31 to 40	301	13	43.2	8	26.6	8788	836	95.1	602	68.5
Ages 21 to 40	1117	103	92.2	66	59.1	30190	3231	107.0	2271	75.2