Table 1 Characteristics of the Shandong Case-Control Study and baseline characteristics of the Taixing Prospective Cohort Study
From: Risk prediction for breast Cancer in Han Chinese women based on a cause-specific Hazard model
Variables | Â | Code | Shandong Case Control Study | Taixing Prospective Cohort Study | ||||
|---|---|---|---|---|---|---|---|---|
case (n = 328) | control(n = 656) | P-value | case(n = 34) | control(n = 13,142) | P-value | |||
Age | Year |  | 49.65 ± 9.26 | 49.65 ± 9.26 | 0.992 | 47.06 ± 9.45 | 46.78 ± 11.46 | 0.888 |
Number of abortions | 0 | 0 | 137 (41.77) | 460 (70.12) | Â | 23 (67.65) | 9612 (73.14) | Â |
|  | 1–2 | 1 | 164 (50.00) | 177 (26.98) | <0.001 | 10 (29.41) | 3210 (24.43) | 0.771 |
|  | ≥3 | 2 | 27 (8.23) | 19 (2.90) |  | 1 (2.94) | 320 (2.43) |  |
Age at first live birth | < 25 | 0 | 128 (39.02) | 378 (57.62) |  | 23 (67.65) | 9853 (74.97) |  |
|  | 25–29 | 1 | 175 (53.35) | 253 (38.57) | <0.001 | 11 (32.35) | 3138 (23.88) | 0.438 |
|  | ≥30 | 2 | 25 (7.62) | 25 (3.81) |  | 0 (0.00) | 151 (1.15) |  |
Benign breast disease history | Yes | 1 | 18 (5.49) | 7 (1.07) | <0.001 | 0 (0.00) | 46 (0.35) | 1.000 |
BMI | < 24 | 0 | 143 (43.60) | 347 (52.90) |  | 17 (50.00) | 9039 (68.78) |  |
|  | 24–27.9 | 1 | 130 (39.63) | 233 (35.52) | 0.002 | 14 (41.18) | 3690 (28.08) | 0.026 |
|  | ≥28 | 2 | 55 (16.77) | 76 (11.59) |  | 3 (8.82) | 413 (3.14) |  |
Breast cancer family history | Yes | 1 | 19 (5.79) | 9 (1.37) | < 0.001 | 2 (5.88) | 90 (0.68) | 0.009 |
Life satisfaction scores | ≥13 | 1 | 188 (57.32) | 229 (34.91) | <0.001 | 22 (64.71) | 6907 (52.56) | 0.213 |