| Frequency of breakfast intake | P for trend1 | ||||||
---|---|---|---|---|---|---|---|---|
Everyday | 5–6 times/week | 3–4 times/week | 0–2 times/week | |||||
Odds ratios (95% confidence intervals) | ||||||||
Pre- to early pregnancy | ||||||||
 Case/total (%) | 768/5854 (13.1) | 98/657 (14.9) | 60/430 (14.0) | 81/550 (14.7) |  | |||
 Crude | 1.00 | 1.16 | (0.92–1.46) | 1.07 | (0.81–1.43) | 1.14 | (0.89–1.47) | 0.18 |
 Adjusted2 | 1.00 | 1.13 | (0.89–1.43) | 0.99 | (0.74–1.34) | 1.06 | (0.81–1.39) | 0.70 |
Early to mid-pregnancy | ||||||||
 Case/total (%) | 815/6161 (13.2) | 83/630 (13.2) | 51/352 (14.5) | 58/348 (16.7) |  | |||
 Crude | 1.00 | 1.00 | (0.78–1.27) | 1.11 | (0.82–1.51) | 1.31 | (0.98–1.76) | 0.08 |
 Adjusted2 | 1.00 | 0.95 | (0.74–1.23) | 1.04 | (0.76–1.44) | 1.15 | (0.84–1.57) | 0.54 |