Table 3.

Results of multivariate logistic regression analysis with categorized selected variables.

Variables	Partial regression coefficient	95% CI of partial regression coefficient	Odds ratio	95% CI of odds ratio	P value	Integral weight
Diffuse HRCT pattern	1.4320	0.3677–2.4963	4.1872	1.4445–12.1378	0.0084*	1
High CRP (≥ 5.5)	1.0060	0.0994–1.9126	2.7347	1.1045–6.7710	0.0296*	1
Low PaO2/FiO2 ratio (< 250)	1.1516	0.2229–2.0802	3.1632	1.2497–8.0065	0.0151*	1

CI, confidence interval; HRCT, high-resolution computed tomography; CRP, C-reactive protein.

*P < 0.05.