Table 3.
African Americans | Native Hawaiian | Japanese American | Latino | White | ||||||
---|---|---|---|---|---|---|---|---|---|---|
Ca/Co | OR (95% CI) | Ca/Co | OR (95% CI) | Ca/Co | OR (95% CI) | Ca/Co | OR (95% CI) | Ca/Co | OR (95% CI) | |
Age at menarche1 | ||||||||||
<11 | 14/95 | ref | 11/115 | ref | 101/679 | ref | 31/217 | ref | 31/184 | ref |
11–12 | 53/482 | 0.87(0.45–1.66) | 48/450 | 1.15(0.56–2.36) | 390/3632 | 0.79(0.62–1.00) | 120/1186 | 0.79(0.51–1.23) | 117/1004 | 0.66(0.42–1.03) |
>13 | 53/543 | 0.80(0.42–1.56) | 39/430 | 1.10(0.52–2.29) | 345/3814 | 0.72(0.56–0.92) | 147/1486 | 0.80(0.52–1.24) | 123/1170 | 0.64(0.41–0.99) |
Trend test P | 0.52 | 0.92 | 0.02 | 0.5 | 0.13 | |||||
Parity1 | ||||||||||
Nulliparous | 7/140 | ref | 9/85 | ref | 104/1169 | ref | 21/302 | ref | 30/399 | ref |
1 or more children | 113/984 | 2.30(1.03–5.17) | 89/911 | 0.93(0.42–2.06) | 733/6979 | 1.07(0.85–1.34) | 278/2591 | 1.47(0.90–2.39) | 241/1963 | 1.50(0.99–2.27) |
Type of menopause2 | ||||||||||
Natural | 39/420 | ref | 38/419 | ref | 382/4116 | ref | 134/1517 | ref | 116/1128 | ref |
Oophorectomy | 27/200 | 1.22(0.66–2.23) | 20/155 | 1.14(0.56–2.28) | 147/1130 | 1.49(1.15–1.92) | 52/326 | 1.49(1.00–2.19) | 52/336 | 1.30(0.83–2.01) |
Simple hysterectomy Years of menstruation among | 34/272 | 0.96(0.53–1.73) | 12/142 | 0.92(0.40–2.02) | 111/803 | 1.68(1.27–2.22) | 65/550 | 1.14(0.78–1.64) | 54/369 | 1.18(0.75–1.85) |
Years of menstruation among natural postmenopausal women3 | ||||||||||
< 30 | 12/78 | ref | 12/80 | ref | 42/442 | ref | 29/256 | ref | 17/153 | ref |
> 30 – < 35 | 10/124 | 0.45(0.18–1.14) | 11/122 | 0.63(0.25–1.58) | 81/1083 | 0.90(0.61–1.36) | 42/451 | 0.87(0.52–1.45) | 43/338 | 1.10(0.60–2.09) |
> 35 | 17/218 | 0.42(0.18–1.00) | 15/217 | 0.35(0.14–0.85) | 259/2591 | 1.23(0.87–1.77) | 63/810 | 0.71(0.45–1.16) | 56/637 | 0.76(0.42–1.43) |
Trend test P | 0.07 | 0.02 | 0.05 | 0.14 | 0.18 | |||||
OC use1 | ||||||||||
Never | 60/537 | ref | 47/466 | ref | 427/4668 | ref | 167/1663 | ref | 112/936 | ref |
Ever | 60/587 | 0.82(0.51–1.33) | 51/530 | 0.85(0.52–1.39) | 410/3480 | 1.32(1.11–1.57) | 132/1230 | 1.04(0.79–1.38) | 159/1426 | 0.93(0.68–1.27) |
Menopausal hormone therapy4 | ||||||||||
Never use of any type of hormone therapy | 46/439 | ref | 23/325 | ref | 197/2113 | ref | 101/1207 | ref | 67/531 | ref |
Ever ET | 35/312 | 1.04(0.62–1.72) | 27/220 | 1.34(0.68–2.65) | 208/1756 | 1.12(0.88–1.42) | 87/630 | 1.41(1.01–1.96) | 84/622 | 0.97(0.66–1.43) |
Ever EPT | 17/130 | 1.52(0.80–2.80) | 20/161 | 1.58(0.80–3.10) | 222/2113 | 1.22(0.99–1.51) | 58/498 | 1.47(1.02–2.11) | 64/654 | 0.90(0.61–1.33) |
Per 5 years of ever use of ET4 | 0.92(0.69–1.17) | 1.20(0.88–1.63) | 1.09(0.99–1.20) | 1.08(0.92–1.27) | 1.11(0.95–1.28) | |||||
Per 5 years of ever use of EPT4 | 1.27(0.72–2.01) | 1.19 (0.67–1.95) | 1.03(0.90–1.18) | 1.02(0.76–1.32) | 0.94(0.73–1.19) |
Multivariate logistic regression models stratified by matching set and adjusted for alcohol intake, smoking status, METs, BMI at baseline and BMI change from age 21 to baseline, education, diabetes, and mutually adjusted parity, oral contraceptive use, menopausal status and hormone use.
Among postmenopausal women only. Multivariate logistic regression models adjusted for matching factors, alcohol intake, smoking status, METs, BMI at baseline and BMI change from age 21 to baseline, education, diabetes, parity, oral contraceptive use, menopausal hormone use and years of menstruation.
Among postmenopausal women only. Multivariate logistic regression models adjusted for matching factors, alcohol intake, smoking status, METs, BMI at baseline and BMI change from age 21 to baseline, education, diabetes, parity, oral contraceptive use, menopausal hormone use.
Among postmenopausal women only for estrogen therapy use with or without progestin. Multivariate logistic regression models adjusted for matching factors, alcohol intake, smoking status, METs, BMI at baseline and BMI change from age 21 to baseline, education, diabetes, parity, oral contraceptive use, and age at and type of menopause.