Risk factor OR 95% CI Notes Gestational duration     Only singletons <32 weeks 1.21 0.93-1.58   <37 weeks 1.16 1.05-1.28   Birth weight     Only sngletons <1500g 1.06 0.78-1.45   <2500g 1.07 0.95-1.21   ≥4500g 1.21 1.07-1.38   Growth deviation     Only singletons SGA 0.91 0.77-1.08   LGA 1.34 1.21-1.47   Respiratory diagnoses, CPAP or mechanical ventilation 1.07 0.92-1.23 All infants Low Apgar score (<7 at 5 minutes) 1.33 1.08-1.63 All infants with known Apgar score CPAP = Continuous Positive Airway Pressure LGA = Large for Gestational Age SGA = Small for Gestational Age

Table 5: Some putative neonatal risk factors studied in 6458 cancer cases. Odds ratios (OR) with 95% confidence intervals (95% CI), adjustments as states [9].