Variable | Cases | Controls | IRRa (95 % CI) | ||
---|---|---|---|---|---|
n (%) | Median (5–95 %) | n (%) | Median (5–95 %) | ||
Women | 687 (100) | 687 (100) | |||
Age at inclusion, years | 57 (51–64) | 57 (51–64) | |||
School education | |||||
Short | 198 (29) | 257 (37) | 1.0 (ref.) | ||
Medium | 344 (50) | 316 (46) | 1.39 (1.07–1.79) | ||
Long | 145 (21) | 114 (17) | 1.59 (1.13–2.24) | ||
Body mass index, kg/m2 | 25 (20–34) | 25 (20–34) | 1.01 (0.96–1.07)b | ||
Nulliparous | 102 (15) | 78 (11) | 1.02 (0.64–1.60)c | ||
Number of births | 2 (1–4) | 2 (1–4) | 0.92 (0.79–1.06) | ||
Age at first birth, years | 23 (18–31) | 23 (18–32) | 1.07 (0.91–1.25)d | ||
Use of HRT, yearse | 6 (0.5–19) | 5 (0.5–20) | 1.00 (0.87–1.15)f | ||
Abstainers | 15 (2) | 22 (3) | 0.80 (0.40–1.61)g | ||
Alcohol intake, g/day | 11 (1–43) | 9 (1–40) | 1.12 (1.04–1.21)h | ||
NSAID usei | 286 (42) | 239 (35) | 1.33 (1.07–1.66) |