Figure 3From: Patterns of soil-transmitted helminth infection and impact of four-monthly albendazole treatments in preschool children from semi-urban communities in Nigeria: a double-blind placebo-controlled randomised trial The odds of testing positive for A. lumbricoides as a function of time for children in the treatment and placebo groups. The placebo group is represented by the solid line while the treatment group is represented by the dotted line.Back to article page