Table 3 Associations between breast cancer and the timing of eating and duration of nighttime eating behavior in Hong Kong Chinese women
From: Nighttime eating and breast cancer among Chinese women in Hong Kong
Variables | Case participants (n = 894) | Controls (n = 882) | ORa (95% CI) | ORb (95% CI) | ORc (95% CI) | P valued |
|---|---|---|---|---|---|---|
Duration | ||||||
 None | 762 (85.2) | 774 (87.8) | 1.00 (ref) | 1.00 (ref) | 1.00 (ref) |  |
 <10 | 48 (5.4) | 45 (5.1) | 1.34 (0.87–2.06) | 1.76 (0.99–3.13) | 1.75 (0.97–3.14) | 0.06 |
 10–19 | 40 (4.5) | 42 (4.8) | 1.05 (0.67–1.64) | 1.46 (0.81–2.63) | 1.46 (0.80–2.65) | 0.22 |
 ≥20 | 44 (4.9) | 21 (2.4) | 2.23 (1.30–3.82) | 2.08 (1.05–4.15) | 2.28 (1.13–4.61) | 0.02 |
Timing | ||||||
 None | 762 (85.2) | 774 (87.8) | 1.00 (ref) | 1.00 (ref) | 1.00 (ref) |  |
 10 p.m.–12 a.m. | 78 (8.7) | 58 (6.6) | 1.54 (1.08–2.21) | 1.80 (1.11–2.90) | 1.84 (1.14–2.98) | 0.01 |
 12 a.m.–2 a.m. | 20 (2.2) | 15 (1.7) | 1.43 (0.72–2.82) | 2.50 (1.00–6.26) | 2.73 (1.01–6.99) | 0.04 |
 2 a.m.–4 a.m. | 12 (1.3) | 12 (1.4) | 1.08 (0.48–2.43) | 1.98 (0.79–4.97) | 1.93 (0.76–4.94) | 0.17 |
 Irregulare | 22 (2.5) | 23 (2.6) | 1.14 (0.62–2.08) | 0.99 (0.42–2.37) | 0.99 (0.41–2.40) | 0.98 |