Table 2.

Generalized mixed model results on Mortality status (parameters of significant covariates).

Effect	Estimate	Std. Error	Wald Chi-square	p-value	Odds Ratio*	95 % OR
Intercept	−8.0944	2.8150	8.2681	0.0040
SP-D1	0.0025	0.0010	6.1171	0.0134	1.132	1.026	1.249
Diff_SP-D	0.0026	0.0009	8.7308	0.0031	1.141	1.045	1.245
Age	0.0713	0.0356	4.0142	0.0451	1.074	1.002	1.151

^aOdds ratios are calculated at means of Age (73.4), of level of SP-D at T₀ (150 ng/mL) and of difference among follow-up and admission values (Diff_SP-D). Odds ratios indicate how risk of mortality varies by unitary increase of Age, increases of 50 points of Diff_SP-D and increases of 50 points of SP-D levels from their base values.