From: Respiratory symptoms in preterm infants: burden of disease in the first year of life
    Risk factors | Common outcomes | Severe outcomes | ||||
---|---|---|---|---|---|---|
 | n = 101 | n = 37 | ||||
 | OR | CI | p-value | OR | CI | p-value |
   BPDa | 0.57 | (0.22-1.49) | 0.249 | 1.20 | (0.54-2.66) | 0.659 |
Known risk factors for BPD | Â | Â | Â | Â | Â | Â |
   Gestational age, per week | 1.04 | (0.89-1.22) | 0.605 | 0.94 | (0.82-1.08) | 0.375 |
   Male sex | 1.25 | (0.52-3.00) | 0.625 | 1.02 | (0.47-2.22) | 0.953 |
   Birthweight, per kg | 1.36 | (0.56-3.29) | 0.493 | 0.70 | (0.32-1.51) | 0.362 |
   Chorioamnionitisb | 1.58 | (0.56-4.44) | 0.387 | 1.55 | (0.68-3.52) | 0.295 |
   PDAc | 1.65 | (0.51-5.32) | 0.402 | 0.56 | (0.21-1.52) | 0.253 |
   PIPd | 1.10 | (0.92-1.33) | 0.292 | 1.24 | (1.05-1.47) | 0.012 |
Factors of perinatal adaption | Â | Â | Â | Â | Â | Â |
   Cord blood pHe | 1.98 | (0.41-9.48) | 0.393 | 4.37 | (1.4-13.61) | 0.011 |
   APGAR score at 10 min.f | 1.05 | (0.74-1.49) | 0.783 | 1.55 | (1.14-2.12) | 0.006 |
   CRIB-score | 0.93 | (0.82-1.05) | 0.232 | 1.14 | (1.01-1.28) | 0.024 |
Environmental risk factors | Â | Â | Â | Â | Â | Â |
   Contact to other childreng | 4.71 | (1.77-12.56) | 0.002 | 1.30 | (0.59-2.90) | 0.516 |
   Maternal atopy | 1.52 | (0.41-5.66) | 0.532 | 0.82 | (0.27-2.46) | 0.727 |
   smoking in pregnancy | 1.41 | (0.29-6.79) | 0.672 | 1.58 | (0.48-5.20) | 0.450 |