Household and individual questionnaires. Because most of the
survey staff were comfortable reading the questionnaires in English,
translation of the questionnaires was not necessary. However, for some
interviewers, it was necessary to clarify the specific meaning of certain
questions during the training and, when necessary, interviewers carried
copies of the questionnaires with their own handwritten annotations
reminding them of the exact meaning of key terms. Questionnaires
were divided into 6 modules. The 3 that were relevant to the data
reported here were as follows: module 1, household-level questions
(contained geographic, demographic, water source, and FFQ questions);
module 4, questions on children aged 6–11 y (demographic);
and module 5, questions on women aged 15–49 y (demographic and
health questions).