Table 2.

Person-years of follow-up and the number of births, deaths, and meningioma tumors in 5-year age groups, respectively.

Agea	Women with at least one delivery				Women without children
	Number of			Person-yr.’s	Number of		Person-yr.’s
	Birthsb	Deaths	Tumors		Deaths	Tumors
15–19	55,129	15	1	5,638,765	2219	22	3,756,930
20–24	443,253	225	6	5,598,316	2341	29	2,613,812
25–29	822,820	631	32	5,378,902	1689	41	1,520,173
30–34	700,281	1117	86	4,870,679	1279	37	937,310
35–39	280,886	1633	165	4,121,828	1034	35	673,416
40–44	49,509	2040	228	3,203,002	928	43	503,164
45–49	1965	2299	242	2,173,442	964	38	345,030
50+	51	2635	149	1,256,686	904	19	202,776
All ages	2,353,894	10,595	909	32,241,620	11,358	264	10,552,611

Women with at least one delivery and women without children during the follow-up period 1973–2015.

^aAttained age at delivery, death or tumor diagnosis.

^bMultiple births are counted as one birth.