Proportions with a 95% confidence interval (95% CI) pertaining to the characteristics of 252 schoolchildren aged 1 to 12 years from urban areas of Fernandópolis, in the northwest of São Paulo State, Brazil.

ˇDesign effect considering income strata.†The % refers to the distribution in the studied sample. The confidence interval (95% CI) was estimated based on 1,000 bootstrap samples.††Refers to the families who have no health insurance at their disposal and are solely and exclusively dependent on the Brazilian Unified Health System.£Note these habits at least 1 time in the past month.µNote the habit of hand washing before meals (at least 3 times a day).¥Based on clinical presentation (signs and symptoms) and laboratory results (serology and eosinophilia).‡Relative frequency in the Fernandópolis population.‡‡Proportion Z-test comparing sample vs. population.-There are no population data available.