Results
A total of 952 children were followed prospectively for 5 months, 484 children received a water filter in their household and 468 children did not receive a water filter. There were no large differences observed between the filter and non-filter groups on any of the demographic variables measured (Table 1). The median age of these children was 20 months for both the filter and non-filter groups with the range being between 2 and 40 months. Forty-eight percent of the children were female, and the majority resided in households with Spanish being their primary language. The majority of caregivers had at least 6 years of formal education, and the main source of water for these households were tanker trucks. Of the 952 children followed, 65% had at least one household visit with caregiver-reported diarrhea. One percent of children had all household visits with caregiver-reported diarrhea. There were no significant differences in demographic variables observed between those households that received the intensive KPC survey and the standard version.