Hepatitis C virus among blood donors and general population in Middle East and North Africa: Meta-analyses and meta-regressions

Table 5 Univariable and multivariable meta-regression models for HCV Ab prevalence among blood donors and the general population in Europe

	Studies	Samples		Univariable analysis			Multivariable analysisb
	Total (n)	Total (n)	RR (95%CI)	P value	F P valuea	Variance explained R2 (%)	ARR (95%CI)	P value
Subpopulations
Blood donors	257	25232790	1				1
The general population	120	410444	15.57 (11.83-20.49)	< 0.001	< 0.001	53.62	15.10 (11.48-19.86)	< 0.001
Year of data collection	377	25643234	0.93 (0.88-0.98)	0.004	0.005	2.17	0.96 (0.92-0.99)	0.020

^aVariables with P ≤ 0.2 were eligible for inclusion in the multivariable analysis.

^bThe adjusted R² for the full model was 54.27%.

Ab: Antibody; ARR: Adjusted relative risk; CI: Confidence interval; RR: Relative risk.