Table 2.
Characteristics of high- and low-risk patients according to the modified Gail model (age: 35–59.9 years)
| Variable∗ | High-risk group (modified Gail score >0.65) (N = 210) | Low-risk group (modified Gail score ≤0.65) (N = 1003) | ||||
|---|---|---|---|---|---|---|
| N | Mean | 95% CI | N | Mean | 95% CI | |
| Estimated risk for developing invasive breast cancer: | ||||||
| (i) Over the next 5 years | 210 | 1.08 | (1.01, 1.15) | 970 | 0.42 | (0.41, 0.43) |
| (ii) Over lifetime (age 90) | 210 | 5.9 | (5.48, 6.33) | 970 | 2.9 | (2.8, 2.94) |
|
| ||||||
| Age | 210 | 49.7 | (48.9, 50.5) | 1003 | 46.6 | (46.1, 47.0) |
| Age at first pregnancy | 163 | 27.2 | (26.3, 28.1) | 454 | 22.1 | (21.7, 22.5) |
| Age at menarche | 168 | 13.1 | (12.9, 13.3) | 711 | 13.1 | (13.0, 13.2) |
| N | Count (%) | N | Count (%) | |||
|
| ||||||
| First-degree family with breast cancer | 210 | 120 (57.1%) | 1003 | 23 (2.3%) | ||
| Prior breast biopsy | 210 | 21 (10.0%) | 975 | 14 (1.4%) | ||