Table 2. Linear regression analysis of Clostridium perfringens with age, ART duration, immune status, and use of cotrimoxazole in the ART(+) group.

	Unadjusted linear regression			Adjusted linear regression
Variable	Beta	SE	P-value	Beta	SE	P-value
Age (years)	0.323	0.261	0.09
ART duration (years)	0.726	0.166	<0.001	0.726	0.166	<0.001
Th2 count	0.418	0.001	0.024
Th17 count	0.371	0.015	0.048
Activated CD8+ cells (%)	-0.484	0.068	0.008
Cotrimoxazole use (yes vs. no)	-0.446	0.809	0.015

ART: anti-retroviral therapy; Beta: regression coefficient; SE: standard error.

The factors with P < 0.05 in the simple linear regression analysis were included in the stepwise multiple linear regression analysis. P-values in bold are significant.