Table 1 Baseline characteristics of cohort members, follow-up of 22,931 women
From: The association of women’s birth size with risk of molecular breast cancer subtypes: a cohort study
Number (%) | |
|---|---|
Mother’s age at birth, mean (SD) | 28.0 (6.1) |
Birth weight, g | |
Mean (SD) | 3446 (508) |
< 3000 g | 3684 (16.1) |
3000–3499 g | 8657 (37.8) |
3500–3999 g | 7672 (33.5) |
≥ 4000 g | 2912 (12.7) |
Missing | 6 (0.03) |
Birth length, cm | |
Mean (SD) | 50.5 (2.1) |
< 49 | 3190 (13.9) |
49 | 3055 (13.3) |
50 | 5298 (23.1) |
51 | 4317 (18.8) |
≥ 52 | 7066 (30.8) |
Missing | 5 (0.02) |
Head circumference, cm | |
Mean (SD) | 34.8 (1.5) |
< 34 | 3849 (16.8) |
34 | 5397 (23.5) |
35 | 6408 (27.9) |
36 | 4642 (20.2) |
≥ 37 | 2549 (11.1) |
Missing | 86 (0.4) |
Total | 22,931 (100) |