Increasing prevalence of malaria and acute dengue virus coinfection in Africa: a meta-analysis and meta-regression of cross-sectional studies

Table 2 Meta-regression with categorical covariates with random-effect model

Covariate	Category	B	SE	95% CI for Logit event rate		Category p-value	Covariate p-value
Covariate	Category	B	SE	Lower	Upper	Category p-value	Covariate p-value
Study period	Intercept	− 4.513	0.462	− 0.452	− 0.361	0.0000
	2008–2013	Reference
	2014–2017	1.264	0.567	0.153	2.374	0.0258	0.0414
	2018–2021	1.562	0.718	0.155	0.2969	0.0296	0.0414
Region	Intercept	− 3.031	0.5213	− 4.053	− 2.010	0.0000
	Central Africa	Reference
	East Africa	− 0.539	0.816	− 2.137	1.060	0.5089	0.3336
	West Africa	− 1.031	0.696	− 2.395	0.334	0.1387	0.3336
Sample size	Intercept	− 3.607	0.410	− 4.410	− 2.804	0.0000
	< 200	Reference
	≥ 200	0.093	0.520	− 0.925	− 1.110	0.8586	0.8586

ISSN: 1475-2875