marginally significantP = 0.05
The relationship was significant when considering the risk of cholera in only placebo recipients (OR: 0.96; 95% CI: 0.94-0.98; P < 0.0001), and was of marginally significant in a model that considered the risk only in vaccinees (OR: 0.98; 95% CI: 0.96-1.00; P = 0.05).