Table 5.
Unadjusted and adjusted relative risk of outcomes for VLBW infants during post-QI phase with reference to pre-QI phase
| Adverse outcomes | Pre-QI phase (n = 270) | Post-QI phase (n = 480) | |
|---|---|---|---|
| Unadjusted RR (95% CI) | bAdjusted RR (95% CI) | ||
| Hypothermia | 1.00 | 0.74 (0.70, 0.79) | 0.74 (0.63, 0.87) |
| Moderate/severe hypothermia | 1.00 | 0.44 (0.37, 0.51) | 0.44 (0.35, 0.54) |
| Composite outcome | 1.00 | 0.89 (0.73, 1.08) | 0.89 (0.69, 1.14) |
| Mortality | 1.00 | 0.25 (0.13, 0.48) | 0.26 (0.13, 0.50) |
| LOS | 1.00 | 0.66 (0.52, 0.84) | 0.66 (0.50, 0.87) |
| NEC (Bell stage ≥ 2) | 1.00 | 0.52 (0.25, 1.10) | 0.54 (0.25, 1.15) |
| IVH or PVL (Papile grade 3/4) | 1.00 | 1.60 (0.64, 4.00) | 1.77 (0.69, 4.51) |
| Pulmonary hemorrhage | 1.00 | 0.60 (0.31, 1.14) | 0.61 (0.32, 1.20) |
| BPD (moderate/severe) | 1.00 | 1.10 (0.71, 1.71) | 1.11 (0.70, 1.78) |
| ROP (grade 3/4) | 1.00 | 1.50 (0.40, 5.62) | 1.49 (0.39, 5.62) |
Abbreviations: QI Quality improvement, RR Risk ratio, CI Confidence interval, BPD Bronchopulmonary dysplasia, IVH Intraventricular haemorrhage, NEC Necrotizing enterocolitis, LOS Late-onset neonatal sepsis, ROP Retinopathy of prematurity, GA Gestational age, BW Birth weight, SGA Small for gestational age
b Adjusted for BW, GA, SGA, Apgar score at 5 min < 7 by Poisson regression analysis