Figure 2.

Weekly incidence rates of diarrheal disease in concrete BSF and control households for the longitudinal prospective cohort study in Bonao, Dominican Republic, from July to August 2007. *ORs for diarrheal disease are calculated using ordinary logistic regression comparing BSF with control households after adjustment for categorical age. Week 1 (OR = 0.25; CI = 0.07–0.91; sample size = 669) and week 4 (OR = 0.08; CI = 0.01–0.64; sample size = 645) were statistically significant with confidence intervals not crossing the null value of 1.00.