TABLE 2.
Odds for different obstructive airway diseases
| Finland | Norway | |||
| 18–29 years | 18–29 years | 30–50 years | 18–50 years | |
| OR (95% CI) | OR (95% CI) | OR (95% CI) | OR (95% CI) | |
| Asthma, J45–J46 | ||||
| Full term# | Reference | Reference | Reference | Reference |
| Extremely preterm | 2.90 (2.00–4.21) | 3.10 (2.29–4.20) | 2.71 (1.73–4.25) | 2.96 (2.26–3.88) |
| Very preterm | 2.26 (1.80–2.85) | 2.04 (1.71–1.44) | 1.83 (1.51–2.21) | 1.94 (1.70–2.21) |
| Moderately preterm | 1.24 (0.96–1.60) | 1.42 (1.20–1.69) | 1.41 (1.20–1.66) | 1.41 (1.25–1.60) |
| Late preterm | 1.17 (1.05–1.30) | 1.28 (1.18–1.38) | 1.25 (1.17–1.34) | 1.26 (1.20–1.33) |
| Early term | 1.12 (1.06–1.18) | 1.13 (1.08–1.19) | 1.10 (1.05–1.15) | 1.11 (1.08–1.15) |
| Post-term | 0.94 (0.85–1.05) | 0.98 (0.93–1.03) | 1.00 (0.95–1.04) | 0.99 (0.96–1.02) |
| All COPD, J41–J44 | ||||
| Full term | Reference | Reference | Reference | Reference |
| Extremely preterm# | 18.92 (9.30–38.46) | 7.44 (3.49–15.85) | 9.58 (5.50–16.69) | |
| Very preterm# | 6.69 (4.00–11.18) | 3.18 (2.23–4.54) | 3.32 (2.45–4.49) | |
| Moderately preterm | 3.95 (1.38–11.32) | 3.13 (1.72–5.70) | 2.32 (1.72–3.12) | 2.28 (1.75–2.97) |
| Late preterm | 1.28 (0.60–2.71) | 1.47 (1.01–2.13) | 1.39 (1.19–1.63) | 1.41 (1.22–1.63) |
| Early term | 0.66 (0.40–1.09) | 1.03 (0.80–1.32) | 1.23 (1.12–1.35) | 1.23 (1.13–1.35) |
| Post-term | 0.61 (0.22–1.65) | 1.08 (0.85–1.38) | 1.03 (0.93–1.14) | 0.97 (0.88–1.08) |
| Emphysema, J43 | ||||
| Full term | Reference | Reference | Reference | Reference |
| Extremely preterm# | 31.09 (7.54–128.14) | 16.66 (4.13–67.23) | 21.68 (6.47–71.63) | |
| Very preterm# | 9.54 (3.09–29.45) | 2.60 (0.83–8.18) | 4.06 (1.86–8.90) | |
| Moderately preterm# | 6.28 (1.95–20.17) | 1.84 (0.68–4.98) | 2.62 (1.23–5.58) | |
| Late preterm# | 1.09 (0.34–3.44) | 1.16 (0.70–1.93) | 1.15 (0.72–1.81) | |
| Early term# | 0.62 (0.27–1.46) | 1.13 (0.84–1.52) | 1.04 (0.79–1.38) | |
| Post-term# | 1.14 (0.59–2.18) | 1.18 (0.90–1.56) | 1.17 (0.91–1.52) | |
| Other COPD, J41, J42, J44 (not J44.9) | ||||
| Full term | Reference | Reference | Reference | Reference |
| Extremely preterm# | 6.39 (0.89–45.79) | 8.33 (3.68–18.85) | 7.99 (3.77–16.97) | |
| Very preterm# | 8.27 (3.88–17.60) | 3.61 (2.48–5.24) | 4.06 (2.91–5.67) | |
| Moderately preterm# | 2.23 (0.71–6.97) | 2.61 (1.91–3.56) | 2.58 (1.91–3.48) | |
| Late preterm# | 1.01 (0.49–2.06) | 1.51 (1.28–1.79) | 1.48 (1.25–1.74) | |
| Early term# | 0.95 (0.63–1.45) | 1.23 (1.11–1.37) | 1.21 (1.09–1.34) | |
| Post-term# | 1.22 (0.84–1.77) | 1.04 (0.93–1.16) | 1.05 (0.94–1.17) | |
| Unspecified COPD, J44.9 | ||||
| Full term | Reference | Reference | Reference | Reference |
| Extremely preterm# | 32.37 (14.16–73.96) | 9.82 (4.33–22.25) | 15.13 (8.41–27.21) | |
| Very preterm# | 7.73 (3.82–15.64) | 3.59 (2.40–5.35) | 4.11 (2.85–5.94) | |
| Moderately preterm# | 3.01 (1.24–7.33) | 2.68 (1.93–3.72) | 2.71 (1.99–3.68) | |
| Late preterm# | 2.04 (1.28–3.25) | 1.56 (1.31–1.86) | 1.61 (1.36–1.90) | |
| Early term# | 1.21 (0.86–1.69) | 1.24 (1.11–1.39) | 1.23 (1.11–1.37) | |
| Post-term# | 0.97 (0.68–1.40) | 1.04 (0.93–1.17) | 1.04 (0.93–1.16) | |
Models were adjusted for sex, birth year, birth weight z-score, multiple birth, parity, Caesarean section, mother's age, mother's hypertensive disorders during pregnancy, mother's asthma, and mother's and father's education. Extremely preterm: gestational age 23–27 completed weeks; very preterm: 28–31 weeks; moderately preterm: 32–33 weeks; late preterm: 34–36 weeks; early term: 37–38 weeks; full term: 39–41 weeks; post-term: ≥42 weeks. #: missing outcome values in Finland.