Fig. 5From: Onchocerciasis transmission in Ghana: the human blood index of sibling species of the Simulium damnosum complexOdds ratios associated with the proportion of successfully amplified DNA that is of human origin from Simulium damnosum (s.l.) Estimates are derived from a multivariate marginal logistic regression model. Horizontal bars represent 95 % confidence intervals constructed from robust sandwich-estimators of the standard error. The vertical line indicates the null effect of a covariate at an odds ratio = 1Back to article page