Table 1.
Baseline characteristics of eligible women
| Baseline characteristics of eligible women a | Intervention arm N = 7,436 (%) | Control arm N = 8,419 n (%) |
|---|---|---|
| Age (mean) | 58 | 58.1 |
| Previous mammogram | 4,358 (55.7) | 4,790 (58.7) |
| Family history of breast cancer | 310 (4.1) | 303 (3.8) |
| Menarche before 11 years of age | 432 (5.2) | 221 (2.7) |
| First pregnancy after 30 years of age | 660 (10.0) | 575 (7.6) |
| Hormone replacement therapy (ever use) | 842 (11.3) | 826 (9.8) |
| Nulliparous | 235 (3.0) | 237 (3.1) |
| Education (university or higher) | 1,193 (17.0) | 928 (12.0) |
| Marital status (married) | 3,929 (51.1) | 4,451 (53.4) |
| Occupation (housewife) | 4,995 (65.7) | 5,988 (69.1) |
a
Means and percentages correspond to average results for means and percentages of health centers.