Table 5.

Multivariate analysis of predictors of six-minute walking distance at 6 months from symptom onset^a

	OR (95%CI)	P
Peak LDH level (U/L)	7.14 (1.03-9.216)	0.046
Peak CRP (mg/dl)	2.12 (0.89-7.84)	0.251
D-dimer (mg/L)	1.23 (0.996-1.56)	0.025
Admission to ICU	3.21 (1.98-11.3)	0.321
Total steroid dose	3.31 (1.9-10.4)	0.001*
Length of hospital stay	0.89 (−1.21-5.76)	0.002*
Total severity score of CT scan on the 14th day after discharge	3.45 (1.09-8.92)	0.001*
FEV1 (%)	1.23 (−4.8-20.6)	0.654
FVC (%)	0.91 (−1.76-22.76)	0.435
DLCO (%)	4.21 (1.5-9.98)	0.001*

*= significance, ^a Logistic regression analysis adjusted for age and sex. LDH=Lactate dehydrogenase, CRP=C-reactive protein, ICU=Intensive care unit, CT=Computed tomography, FVC=Forced vital capacity, FEV1=Forced expiratory volume in 1 s, DLCO=Diffusing capacity for carbon monoxide, CI=Confidence interval, OR=Odds ratio