Table 3.
Variable |
Pre-intervention (n = 255) |
Post-intervention (n = 793) |
Bivariate analysis* | ||||
---|---|---|---|---|---|---|---|
n | % | n | % | p-value | Degrees of freedom | Test statistic | |
LOSa, median [IQRb] | 8 | [6, 8] | 7 | [3, 9] | < 0.001 | NA | z = 4.84 |
Mortality | |||||||
Yes | 41 | 16.1 | 83 | 10.5 | 0.02 | 1 | 5.83 |
No | 214 | 83.9 | 710 | 89.5 | |||
Mortality by condition | |||||||
Preterm | 0.13 | 1 | 2.31 | ||||
Died | 26 | 25.5 | 57 | 18.5 | |||
Discharged alive | 76 | 74.5 | 251 | 81.5 | |||
LBWc | 0.03 | 1 | 4.89 | ||||
Died | 29 | 23.6 | 61 | 15.0 | |||
Discharged alive | 94 | 76.4 | 345 | 85.0 | |||
Hypoxic ischemic encephalopathy (HIEd) | 0.65 | 1 | 0.20 | ||||
Died | 7 | 24.1 | 20 | 28.6 | |||
Discharged alive | 22 | 75.9 | 50 | 71.4 | |||
Neonatal infection | 0.28 | 1 | 1.15 | ||||
Died | 15 | 10.6 | 25 | 7.6 | |||
Discharged alive | 126 | 89.4 | 303 | 92.4 | |||
Mortality by birthweight | |||||||
Extremely low birthweight, < 1000 g | 0.12 | 1 | 2.43 | ||||
Died | 12 | 92.3 | 11 | 68.8 | |||
Discharged alive | 1 | 7.7 | 5 | 31.3 | |||
Very low birthweight, < 1500 g | 0.05 | 1 | 3.85 | ||||
Died | 6 | 28.6 | 26 | 54.2 | |||
Discharged alive | 15 | 71.4 | 22 | 45.8 | |||
LBW, < 2500 g | 0.11 | 1 | 2.54 | ||||
Died | 11 | 11.7 | 23 | 6.7 | |||
Discharged alive | 83 | 88.3 | 319 | 93.3 | |||
Normal birthweight ≥ 2500 g | 0.20 | 1 | 1.64 | ||||
Died | 11 | 8.7 | 21 | 5.5 | |||
Discharged alive | 115 | 91.3 | 359 | 94.5 |
aLength of Stay
bInterquartile Range
cLow Birthweightd Hypoxic Ischemic Encephalopathy
eExtremely Low Birthweight
fVery Low Birthweight
*A z value was reported for the Wilcoxon rank sum test, but no degree of freedom
NA, not applicable