Marin | East/Central Contra Costa | ||||
---|---|---|---|---|---|
Base No. | Percent (95% CI) | Base No. | Percent (95% CI) | p-value | |
Age | 426 | 363 | p < .053 | ||
40 – 45 years | 20.0 (15.9 – 24.1) | 22.8 (18.3 – 27.4) | |||
46 – 50 years | 20.1 (16.4 – 23.9) | 23.7 (19.3 – 28.2) | |||
51 – 55 years | 23.8 (19.8 – 27.8) | 23.1 (18.7 – 27.6) | |||
56 – 60 years | 20.3 (16.4 – 24.2) | 17.1 (13.1 – 21.1) | |||
61 – 65 years | 15.8 (12.4 – 19.1) | 13.2 (10.2 – 16.2) | |||
Race/Ethnicity | 423 | 361 | p = .007 | ||
Caucasian | 88.3 (85.2 – 91.4) | 84.3 (80.5 – 88.1) | |||
African American | 1.2 (0.1 – 2.2) | 0.9 (<0.1 – 1.7) | |||
Hispanic | 4.9 (2.8 – 7.0) | 3.7 (1.7 – 5.6) | |||
Asian | 4.2 (2.2 – 6.1) | 10.8 (7.6 – 14.1) | |||
Other | 1.4 (0.3 – 2.5) | 0.3 (<0.1 – 0.8) | |||
Ashkenazi Jewish heritage | 416 | 12.8 (9.6 – 16.0) | 357 | 7.1 (4.4 – 9.8) | p = .012 |
Household income | 405 | 345 | p = .14 | ||
≤ $35, 000 | 11.6 (8.4 – 14.7) | 6.3 (3.8 – 8.9) | |||
> $35,000 to $50,000 | 10.2 (7.3 – 13.1) | 9.9 (6.8 – 13.2) | |||
> $50,000 to $80,000 | 26.0 (21.7 – 30.3) | 27.2 (22.5 – 32.0) | |||
> $80,000 to $100,000 | 17.6 (13.8 – 21.4) | 17.2 (13.1 – 21.2) | |||
> $100,000 | 34.6 (29.9 – 39.3) | 39.1 (33.9 – 44.5) | |||
Education level | 425 | 363 | p = .47 | ||
≤High school grad | 6.4 (4.1 – 8.7) | 6.1 (3.6 – 8.5) | |||
Some college/tech school | 36.4 (31.8 – 41.0) | 36.7 (31.7 – 41.8) | |||
College graduate | 30.2 (25.8 – 34.7) | 34.5 (29.6 – 39.5) | |||
Graduate degree | 25.6 (21.4 – 29.8) | 22.7 (18.2 – 27.1) | |||
History of breast cancer | 425 | 5.0 (2.9 – 7.0) | 363 | 4.6 (2.4 – 6.8) | p = .77 |
First degree relatives with history of breast cancer | 426 | 363 | |||
Daughter | 1.1 (0 – 2.3) | 0.6 (0 – 1.4) | p = .61 | ||
Mother | 13.7 (10.2 – 17.3) | 11.4 (7.9 – 14.9) | p = .44 | ||
Sister | 3.6 (1.7 – 5.6) | 4.4 (2.1 – 6.8) | p = .56 | ||
≥ 1 first degree female relative | 14.8 (11.4 – 18.2) | 13.6 (10.0 – 17.2) | p = .43 | ||
≥1 biopsy to check for cancer | 425 | 21.8 (17.9 – 25.7) | 363 | 17.2 (13.3 – 21.2) | p = .12 |