Years of unwanted childlessness | With asthma | Total number | OR (95% CI) |
---|---|---|---|
0 | 106685 | 2471548 | 1.00 (reference) |
1 | 2496 | 50635 | 1.10 (1.05 to 1.14) |
2 | 2502 | 45329 | 1.17 (1.12 to 1.22) |
3 | 1436 | 25028 | 1.22 (1.15 to 1.30) |
≥4 | 2650 | 48288 | 1.16 (1.11 to 1.22) |
ORs with 95% CIs are shown adjusted for year of birth of child, maternal age, parity and body mass index. Children born after in vitro fertilisation are excluded from the analysis.