Variable | Logistic β slopes | Standard error | Regression coefficient | P value |
---|---|---|---|---|
Birthweight | −0.8387 | 0.1768 | −0.2231 | < 0.0001 |
Respiratory distress syndrome | 0.7051 | 0.1384 | 0.2411 | < 0.0001 |
Apgar score at 5 minutes | −0.5530 | 0.1613 | −0.1539 | 0.0006 |
Artificial ventilation | 0.5349 | 0.1930 | −0.1174 | 0.0056 |
Base excess at admission | 0.3684 | 0.1321 | 0.1185 | 0.0053 |
Constant | −0.3690 | 1.1202 | 0.7419 | |
Equation to predict mortality: | ||||
Pr(mortality) = 1 / (1 + exp (−(− 0.37− 0.84 BW + 0.71 RDS − 0.55 APGAR + 0.53 VENT + 0.37 BE))) |
Pr = probability; BW = birthweight category; RDS = respiratory distress syndrome category; VENT = ventilatory support category; BE = base excess category (as defined in table 1).