Table 4.

MLR model 2: variables retained for final MLR analysis after variable selection, coefficients, standard errors of the coefficients, odds ratios, 95% confidence intervals for the odds ratios for the model variables (x), and p-value

Variable	Coefficient	SE	Odds Ratio	95% CI	p-value
High-grade malignancy	.670	.324	1.954	1.034–3.690	0.039
active disease	.850	.328	2.340	1.229–4.456	0.010
bacterial infection	-781	.324	.458	.243–.863	0.016
thrombocytopenia (<50.000/mm3)	.867	.314	2.379	1.287–4.399	0.006
ventilation < 24 h	1.414	.327	4.111	2.167–7.798	<0.001
prothrombin time (%)	-0.016	.008	.984	.970–1.000	0.045
PaO2/FiO2 (p/f)	-.003	.001	.997	.995–1.000	0.025
urea < 0.5 g/l (reference)					0.011
urea 0.5–1 g/l	0.583	.415	1.791	.876–.3.663	0.033
urea > 1 g/l	1.249	.387	3.486	1.545–7.866	0.085
Constant	-0.457	.716	0.633		0.021