Effects of maternal infection on childhood infection intensities and overdispersion.

a<p>Rate Ratios (RR) calculated by negative binomial regression models and adjusted for sex, maternal educational level, monthly income, household electric appliances, water source, bathroom facility, crowding, and number of follow-up evaluations.</p><p>Abbreviations: CI = Confidence Interval.</p><p>Parameters were estimated and statistical comparisons were performed using negative binomial distributions.