Descriptive statistics for the study population.

FootnotesN (%), Number of individuals (percentage of the column total in the first row); NA, Not applicable; SD, Standard deviation.aExcluded because one or more members did not have vibriocidal antibody titer measurements. This does not include the 24 households that were excluded for having only one member.bDefined as the base-ten logarithm of the vibriocidal antibody titer of the initial serum specimen collected on day 2 of the household observation period. For one individual, the serum specimen collected on day 4 was used due to a missing measurement for day 2.Descriptive statistics for the study population.