Table 1.

Distribution of Participants, Person-years at Risk (PYR) and Invasive Epithelial Ovarian Cancers (EOCs), by Study Site

		AARP				CTS				WHI				Total
		N	PYRs	EOCs	CIRb	N	PYRs	EOCs	CIR	N	PYRs	EOCs	CIR	N	PYRs	EOCs	CIR
All participants		154,045	1,508,720	836	55.4	47,365	617,526	380	61.5	108,880	1,120,878	599	53.4	310,290	3,247,124	1815	55.9
Year of birth	<1930	44,444	427,330	305	71.4	17,614	204,446	171	83.6	40,341	394,481	227	57.5	102,399	1,026,261	703	68.5
	1930–39	80,326	789,177	406	51.5	15,102	207,323	125	60.3	47,158	494,275	285	57.7	142,586	1,490,773	816	54.7
	1940+	29,275	292,213	125	42.8	14,649	205,757	84	40.8	21,381	232,122	87	37.5	65,305	730,090	296	40.5
Age (yrs) at recruitment	50–64	100,651	995,395	473	47.5	28,384	394,815	192	48.6	61,277	651,837	323	49.6	190,312	2,042,047	988	48.4
	65–74	53,394	513,325	363	70.7	11,448	149,893	131	87.4	40,456	404,786	232	57.3	105,298	1,068,004	726	68.0
	75+	--	--	--		7,533	72,818	57	78.3	7,147	64,255	44	68.5	14,680	137,073	101	73.7
Number of FTPsa	0	23,838	233,185	162	69.5	9,775	125,271	92	73.4	12,369	127,660	77	60.3	45,982	486,116	331	68.1
	1–2	56,154	552,485	318	57.6	21,675	282,897	172	60.8	35,900	370,582	215	58.0	113,729	1,205,964	717	59.5
	3–4	57,500	562,992	292	51.9	13,895	182,942	108	59.0	44,318	457,568	230	50.3	115,713	1,203,502	630	52.4
	5+	16,553	160,058	64	40.0	2,020	26,416	8	30.3	16,293	165,068	77	46.7	34,866	351,542	149	42.4
Yrs OC use	<1	91,827	896,198	566	63.2	26,193	324,358	252	77.7	72,027	729,214	426	58.4	190,047	1,949,770	1244	63.8
	1–4	27,529	270,681	131	48.4	8,170	113,004	56	49.6	15,821	168,234	73	43.4	51,520	551,920	260	47.1
	5–9	19,536	192,573	89	46.2	7,085	98,058	39	39.8	10,752	114,780	58	50.5	37,373	405,410	186	45.9
	10+	15,153	149,268	50	33.5	5,917	82,106	33	40.2	10,280	108,650	42	38.7	31,350	340,024	125	36.8

^aFTP = full-term pregnancy

^bCIR = crude incidence rate (# EOCs per 100,000 PYRs)