Table 3 Multivariatea comparisons of residence history of women with breast cancer and controls in Marin County, California, 1997–99
From: Risk factors for breast cancer in a population with high incidence rates
All women | Women aged 50 years and over | Women under 50 years of age | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Variable | (Total N) | Cases N (%) (285) | Controls N (%) (286) | Multivariate OR (95% CI) | Cases N (%) (201) | Controls N (%) (201) | Multivariate OR (95% CI) | Cases N (%) (84) | Controls N (%) (85) | Multivariate OR (95% CI) |
Lived in Northeast before age 21 | ||||||||||
Never | 189 (66.3) | 205 (71.7) | 1.0 | 137 (68.2) | 145 (72.1) | 1.0 | 52 (61.9) | 60 (70.6) | 1.0 | |
Ever | 96 (33.7) | 81 (28.3) | 1.3 (0.88–2.0) | 64 (31.8) | 56 (27.9) | 1.2 (0.69–1.9) | 32 (38.1) | 25 (29.4) | 3.2 (1.3–7.9) | |
Lived in Great Lakes region before age 21 | ||||||||||
Never | 211 (74.0) | 222 (77.6) | 1.0 | 148 (73.6) | 146 (72.6) | 1.0 | 63 (75.0) | 76 (89.4) | 1.0 | |
Ever | 74 (26.0) | 64 (22.4) | 1.1 (0.72–1.7) | 53 (26.4) | 55 (27.4) | 0.79 (0.47–1.3) | 21 (25.0) | 9 (10.6) | 4.6 (1.4–14.7) | |
Born in the Northeast | ||||||||||
No | 215 (75.4) | 235 (82.2) | 1.0 | 155 (77.1) | 164 (81.6) | 1.0 | 60 (71.4) | 71 (83.5) | 1.0 | |
Yes | 70 (24.6) | 51 (17.8) | 1.5 (0.94–2.4) | 46 (22.9) | 37 (18.4) | 1.1 (0.61–2.0) | 24 (28.6) | 14 (16.5) | 6.2 (2.2–17.8) | |
Born in the Great Lakes region | ||||||||||
No | 236 (82.8) | 244 (85.3) | 1.0 | 166 (82.6) | 164 (81.6) | 1.0 | 70 (83.3) | 80 (94.1) | 1.0 | |
Yes | 49 (17.2) | 42 (14.7) | 1.2 (0.73–2.1) | 35 (17.4) | 37 (18.4) | 0.89 (0.48–1.6) | 14 (16.7) | 5 (5.9) | 4.3 (1.0–18.3) | |
Years lived in Marin County before age 21 | ||||||||||
0 years | 238 (83.5) | 236 (82.5) | 1.0 | 171 (85.1) | 175 (87.1) | 1.0 | 67 (79.8) | 61 (71.8) | 1.0 | |
≤ 6.2 years | 14 (4.9) | 13 (4.5) | 1.7 (0.72–4.0) | 9 (4.5) | 7 (3.5) | 2.7 (0.85–8.5) | 5 (6.0) | 6 (7.1) | 0.32 (0.06–1.7) | |
6.2 years to 10.75 years | 10 (3.5) | 12 (4.2) | 0.72 (0.27–1.9) | 6 (3.0) | 8 (4.0) | 0.73 (0.21–2.5) | 4 (4.8) | 4 (4.7) | 0.81 (0.12–5.5) | |
>10.75 years to 16.6 years | 6 (2.1) | 11 (3.8) | 0.69 (0.22–2.1) | 5 (2.5) | 6 (3.0) | 1.2 (0.30–5.0) | 1 (1.2) | 5 (5.9) | 0.09 (0.01–1.4) | |
>16.6 years | 17 (6.0) | 14 (4.9) | 1.3 (0.58–3.1) | 10 (5.0) | 5 (2.5) | 2.2 (0.60–8.0) | 7 (8.3) | 9 (10.6) | 1.1 (0.29–4.6) | |
Mean ± SEM | Mean ± SEM | Mean ± SEM | Mean ± SEM | Mean ± SEM | Mean ± SEM | |||||
1.9 ± 0.3 | 1.9 ± 0.3 | 1.7 ± 0.3 | 1.3 ± 0.3 | 2.3 ± 0.6 | 3.5 ± 0.7 | |||||
Lifetime years lived in Marin County | ||||||||||
2 months to 13 years | 75 (26.3) | 68 (23.8) | 1.0 | 32 (15.9) | 29 (14.4) | 1.0 | 43 (51.2) | 39 (45.9) | 1.0 | |
>13 years to ≤24 years | 75 (26.3) | 72 (25.2) | 0.78 (0.46–1.3) | 49 (24.4) | 48 (23.9) | 0.71 (0.32–1.5) | 26 (31.0) | 24 (28.2) | 0.88 (0.32–2.4) | |
>24 years to ≤32 years | 61 (21.4) | 74 (25.9) | 0.68 (0.38–1.2) | 54 (26.9) | 62 (30.8) | 0.61 (0.29–1.3) | 7 (8.3) | 12 (14.1) | 0.52 (0.14–2.0) | |
>32 years to ≤60 years | 74 (26.0) | 72 (25.2) | 0.78 (0.42–1.4) | 66 (32.8) | 62 (30.8) | 0.77 (0.35–1.7) | 8 (9.5) | 10 (11.8) | 1.2 (0.30–4.6) | |
Mean ± SEM | Mean ± SEM | Mean ± SEM | Mean ± SEM | Mean ± SEM | Mean ± SEM | |||||
24.2 ± 0.8 | 24.1 ± 0.8 | 27.7 ± 1.0 | 27.4 ± 0.9 | 15.9 ± 1.2 | 16.4 ± 1.3 | |||||
Lifetime years lived in other San Francisco Bay Area Countiesb | ||||||||||
≥ 0 years to ≤ 6 years | 161 (56.7) | 147 (51.4) | 1.0 | 111 (55.5) | 111 (55.2) | 1.0 | 50 (59.5) | 36 (42.4) | 1.0 | |
>6 years to ≤ 16 years | 61 (21.5) | 71 (24.8) | 0.76 (0.47–1.2) | 43 (21.5) | 43 (21.4) | 1.0 (0.57–1.9) | 18 (21.4) | 28 (32.9) | 0.27 (0.10–0.73) | |
>16 years to ≤55 years | 62 (21.8) | 68 (23.8) | 0.84 (0.53–1.3) | 46 (23.0) | 47 (23.4) | 1.0 (0.60–1.8) | 16 (19.0) | 21 (24.7) | 0.30 (0.09–0.94) | |
Mean ± SEM | Mean ± SEM | Mean ± SEM | Mean ± SEM | Mean ± SEM | Mean ± SEM | |||||
8.8 ± 0.7 | 9.8 ± 0.7 | 9.4 ± 0.8 | 9.6 ± 0.9 | 7.4 ± 1.0 | 10.4 ± 1.2 | |||||
Age of first living in Marin County | ||||||||||
0–22 years | 54 (18.9) | 70 (24.5) | 1.0 | 33 (16.4) | 40 (19.9) | 1.0 | 21 (25.0) | 30 (35.3) | 1.0 | |
23–28 years | 83 (29.1) | 68 (23.8) | 1.5 (0.83–2.5) | 63 (31.3) | 53 (26.4) | 1.2 (0.62–2.5) | 20 (23.8) | 15 (17.6) | 2.3 (0.71–7.8) | |
29–36 years | 73 (25.6) | 75 (26.2) | 1.2 (0.69–2.1) | 55 (27.4) | 54 (26.9) | 1.1 (0.54–2.2) | 18 (21.4) | 21 (24.7) | 1.4 (0.48–4.4) | |
37–68 years | 75 (26.3) | 73 (25.5) | 1.3 (0.76–2.3) | 50 (24.9) | 54 (26.9) | 1.1 (0.54–2.3) | 25 (29.8) | 19 (22.4) | 1.3 (0.41–4.0) | |
Mean ± SEM | Mean ± SEM | Mean ± SEM | Mean ± SEM | Mean ± SEM | Mean ± SEM | |||||
29.2 ± 0.8 | 28.7 ± 0.8 | 29.8 ± 0.9 | 30.4 ± 0.9 | 27.6 ± 1.4 | 24.7 ± 1.5 | |||||