| 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 (%) | 835/5854 (14.3) | 94/657 (14.3) | 71/430 (16.5) | 105/550 (19.1) |  | |||
 Crude | 1.00 | 1.00 | (0.80–1.26) | 1.19 | (0.91–1.55) | 1.42 | (1.13–1.78) | 0.002 |
 Adjusted2 | 1.00 | 0.95 | (0.75–1.21) | 1.09 | (0.83–1.44) | 1.30 | (1.02–1.66) | 0.04 |
Early to mid-pregnancy | ||||||||
 Case/total (%) | 873/6161 (14.2) | 92/630 (14.6) | 60/352 (17.1) | 80/348 (23.0) |  | |||
 Crude | 1.00 | 1.04 | (0.82–1.31) | 1.25 | (0.94–1.66) | 1.81 | (1.39–2.34) | < 0.0001 |
 Adjusted2 | 1.00 | 0.98 | (0.77–1.25) | 1.22 | (0.90–1.65) | 1.75 | (1.32–2.32) | 0.0004 |