Crs 10 mL·kPa−1 | Rrs kPa·s·L−1 | |||
OR (95% CI) | p-value | OR (95% CI) | p-value | |
Crude | 0.55 (0.31–0.96) | 0.03 | 1.20 (0.97–1.49) | 0.10 |
Adjusted for potential confounders | ||||
Males | 0.55 (0.31–0.96) | 0.04 | 1.20 (0.97–1.49) | 0.10 |
Birth length cm | 0.56 (0.31–1.02) | 0.06 | 1.18 (0.94–1.47) | 0.15 |
Gestational age weeks | 0.54 (0.30–0.96) | 0.04 | 1.20 (0.96–1.49) | 0.11 |
Season of birth April to September | 0.53 (0.30–0.94) | 0.03 | 1.20 (0.97–1.49) | 0.10 |
Siblings | 0.60 (0.34–1.05) | 0.07 | 1.17 (0.93–1.46) | 0.18 |
Breastfed in first 3 months of life | 0.49 (0.27–0.89) | 0.02 | 1.18 (0.95–1.47) | 0.14 |
Daycare in first 3 months of life | 0.45 (0.24–0.84) | 0.01 | 1.22 (0.97–1.53) | 0.09 |
Maternal allergy | 0.55 (0.31–0.97) | 0.04 | 1.19 (0.95–1.48) | 0.13 |
Western mother | 0.53 (0.30–0.96) | 0.04 | 1.19 (0.95–1.49) | 0.13 |
Highly educated mother | 0.55 (0.31–0.98) | 0.04 | 1.18 (0.95–1.47) | 0.14 |
Study year | 0.50 (0.27–0.92) | 0.03 | 1.30 (1.02–1.66) | 0.03 |
Adjusted for intermediates | ||||
Maternal smoking during pregnancy | 0.55 (0.31–0.97) | 0.04 | 1.20 (0.97–1.49) | 0.10 |
Birth weight g | 0.50 (0.26–0.94) | 0.03 | 1.20 (0.96–1.50) | 0.11 |
Adjusted multivariable model# | 0.34 (0.15–0.73) | <0.01 | 1.30 (1.02–1.66)¶ | 0.03 |
Crs: compliance of the respiratory system; Rrs: resistance of the respiratory system. Each model consists of the crude model plus adjustment for one single variable. Bold indicates odds ratios that are affected ≥5% by adjustment. #: adjusted for siblings, breastfeeding, daycare and study year; ¶: adjusted for study year.