Table 2.
Crude and adjusted incidence rate ratios for asthma in Danish children born in 1979–2009, according to parental celiac disease status, N=111,807
| N | Children with asthma | IR (per 1,000 PY) | Crude IRR (95% CI) | Adjusted IRRa (95% CI) | |
|---|---|---|---|---|---|
| Parental celiac disease | |||||
| No | 110,700 | 6,057 | 7.6 | 1.00 (Ref) | 1.00 (Ref) |
| Any parent | 1,107 | 68 | 8.5 | 1.12 (0.88–1.48) | 1.09 (0.86–1.39) |
| Maternal | 759 | 47 | 8.5 | 1.11 (0.83–1.48) | 1.09 (0.81–1.45) |
| Paternal | 348 | 21 | 8.5 | 1.13 (0.74–1.75) | 1.11 (0.72–1.70) |
Note:
a
Adjustment: mode of delivery, multiple gestation, birth order, mother’s age at delivery, asthma in mother, and asthma in father.
Abbreviations: CI, confidence interval; IR, incidence rate; IRR, incidence rate ratios; PY, person years.