Table 2. Percentage of improvement on the World Health Organization (WHO) scale (in points) according to type of treatment.

WHO Scale - Improvement at discharge compared to the 1st day of treatment	Group		Not Adjusted (Plasma × Control)		Adjusted (Plasma × Control)#
	Control	Plasma	OR (95%CI)	P-value	OR (95%CI)	P-value
Scale improvement (in points)			1.95 (0.35; 10.91)	0.44	2.32 (0.29; 18.51)	0.42
2 points (%)	77.78±9.95	73.33±11.59
3 points (%)	22.22±9.95	26.67±11.59

Data are reported as mean±SE. ^#Adjusted for sex, age, and chronic obstructive pulmonary disease. P-values were calculated using an ordinal logistic regression model with generalized estimating equations.