Table 1.

Characteristics of Endometrial Cancer Cases and Controls, 2002-2006, Alberta, Canada

Characteristics	Cases (n = 519)		Controls (n = 1,015)
	N	%	N	%
Age at diagnosis/reference date, years
< 40	11	2.1	38	3.7
40–49	66	12.7	127	12.5
50–59	204	39.3	376	37.1
60–69	170	32.8	339	33.4
70+	68	13.1	135	13.3
Residential status
Urban	349	67.2	652	64.2
Rural	170	32.8	363	35.8
Education
High school diploma or less	169	32.5	288	28.4
Non-university certificate	237	45.7	483	47.6
University degree	113	21.8	243	23.9
Unknown	0	0	1	0.1
Marital status
Never married	40	7.7	23	2.3
Ever married	479	92.3	992	97.7
Age at menarche, years of age
≤ 12	306	59.0	508	50.1
> 12	213	41.0	507	49.9
Oral Contraception
Never, < 6 months	212	40.5	296	29.2
Ever	305	58.2	709	69.9
6 – 59 months	170	32.4	349	34.4
60+ months	135	25.8	359	35.4
Unknown duration	0	0	1	0.1
Unknown hormone type	7	1.3	10	1.0
Parity
0	93	17.9	105	10.3
1–2	225	43.4	418	41.2
3+	201	38.7	492	48.5
BMI, kg/m2
<18.5	3	0.6	9	0.9
18.5–24.9	90	17.3	320	31.5
25–29.9	137	26.4	375	37.0
30+	289	55.7	310	30.5
Unknown	0	0	1	0.1
Smoking status
Never	261	50.3	520	51.2
Former	196	37.8	367	36.2
Current	62	11.9	128	12.6
Age at Menopause
≥ 50	254	63.7	436	59.6
< 50	145	36.3	296	40.4
Menopausal hormone therapya
Never use, < 6 months	235	58.9	362	49.5
Estrogen only	18	4.5	23	3.1
E+P continuous combined only	42	10.5	162	22.1
6 – 59 months	22	5.5	61	8.3
60+ months	20	5.0	101	13.8
Other combinations	103	25.8	180	24.6
Unknown hormone therapy type	1	0.3	5	0.7

BMI, body mass index; E+P, estrogen plus progesterone; IUD, intra-uterine device

^aRestricted to post-menopausal women (n=399 cases, n=732 controls).