TABLE 5

Area under the receiver operating curve (AUC) of successive statistical models combining the significantly predictive clinical signs

Predictive variablesAUC (95% CI)p-value when compared to previous modelAUC in imputed dataset assuming all missing oxygen values are >95% (95% CI)AUC in imputed dataset assuming all missing oxygen values are <95% (95% CI)
Temperature0.59 (0.55–0.63)0.59 (0.55–0.63)0.59 (0.55–0.63)
Temperature + crackles0.65 (0.60–0.70)0.0010.65 (0.60–0.70)0.65 (0.60–0.70)
Temperature + crackles + oxygen saturation0.67 (0.61–0.73)0.0950.67 (0.61–0.73)0.67 (0.61–0.72)
Temperature + crackles + oxygen saturation + pulse0.68 (0.62–0.74)0.2080.67 (0.62–0.72)0.67 (0.62–0.73)