Table 4.
Basic characteristics for the OLVG
| Day time | Off hours | P | |
| Number of patients | 1258 | 842 | |
| Male (%) | 776(61.7) | 495(61.7) | ns |
| Mean age, years (SD) | 63.9(15.7) | 61.8(17.7) | 0.005 |
| Mean APACHE II score (SD) | 22.5 (8.7) | 21.6 (9.1) | 0.018 |
| Mean SAPS II score (SD) | 47.6(18.5) | 46.5(18.1) | ns |
| Mean APACHE II score expected mortality | 42.9% | 41.4% | ns |
| Mean SAPS II score expected mortality | 41.9% | 40.0% | ns |
| Median ICU LOS (IQR) | 2.3 (1 to 5) | 1.8(0.7 to 4.3) | <0.001 |
| Median hospital LOS (IQR) | 11 (5 to 21) | 10 (5 to 20) | ns |
| Hospital mortality | 324(25.8%) | 214(25.4%) | ns |
APACHE = acute physiology and chronic health evaluation score; ICU = intensive care unit; IQR = interquartile range; LOS = length of stay; ns = not significant; OLVG = Onze Lieve Vrouwe Gasthuis, one of the participating hospitals; SAPS = simplified acute physiology score; SD = standard deviation.