Table 2 Association between coffee consumption frequency and the risk of bleeding in early pregnancy according to age (n = 3510)
From: Maternal coffee intake and the risk of bleeding in early pregnancy: a cross-sectional analysis
Total No. | No. (%) | Unadjusted OR (95% CI) | Adjusted OR (95% CI)a | |
|---|---|---|---|---|
Overall | 3510 | 636(18.1) | ||
Seldom coffee drinkers | 1077 | 173(16.1) | 1.000 | 1.000 |
Light coffee drinkers (< 1 cup/day) | 595 | 103(17.3) | 1.094(0.837–1.429) | 1.086(0.827–1.425) |
Moderate coffee drinkers (1 cup/day) | 1202 | 226(18.8) | 1.210(0.973–1.504) | 1.225(0.981–1.530) |
Heavy coffee drinkers (≥2 cups/day) | 636 | 134(21.1) | 1.395(1.086–1.792) | 1.358(1.050–1.757) |
Aged < 35 years | 2214 | 372(16.8) | ||
Seldom coffee drinkers | 729 | 111(15.2) | 1.000 | 1.000 |
Light coffee drinkers (< 1 cup/day) | 383 | 57(14.9) | 0.973(0.688–1.376) | 0.993(0.699–1.411) |
Moderate coffee drinkers (1 cup/day) | 747 | 125(16.7) | 1.119(0.847–1.479) | 1.163(0.875–1.547) |
Heavy coffee drinkers (≥2 cups/day) | 355 | 79(22.3) | 1.594(1.155–2.198) | 1.680(1.207–2.338) |
Aged ≥35 years | 1296 | 264(20.4) | ||
Seldom coffee drinkers | 348 | 62(17.8) | 1.000 | 1.000 |
Light coffee drinkers (< 1 cup/day) | 212 | 46(21.7) | 0.973(0.688–1.376) | 1.278(0.834–1.958) |
Moderate coffee drinkers (1 cup/day) | 455 | 101(22.2) | 1.119(0.847–1.479) | 1.316(0.925–1.872) |
Heavy coffee drinkers (≥2 cups/day) | 281 | 55(19.6) | 1.594(1.155–2.198) | 1.123(0.750–1.679) |