Table 3.

Negative binomial meta-regression analyses of proportion of C parvum that were IIc across 80 analysable studies (studies reporting data from a single country where GDPpc, sanitation and water coverage data could be allocated)

Predictor	Single predictor analyses			Final model
	Proportion ratio	95% CI	P-value	Proportion ratio	95% CI	P-value
Log10 GDP per capita US$2005	0.303	0.167–0.549	0.0001
% population with access to improved sanitation	0.969	0.955–0.983	<0.0001	0.967	0.956–0.972	<0.0001
% population with access to improved drinking water	0.943	0.914–0.975	0.0002
Year of publication	0.907	0.815–1.022	0.108	0.888	0.794–0.994	0.039
Study focus on HIV-positive individuals	3.263	1.096–9.717	0.034	3.414	1.428–8.162	0.006

Abbreviation: CI confidence interval