Validation of revised prescreening Denver Questionnaire in preschool children of urban slums.

A large proportion of preschool children in India, as in other developing countries, live in the urban slums. Among them, early identification of developmental delay will be beneficial. In the developed countries, rapid prescreening Denver Questionnaire (R-PDQ) is currently being used for community screening of developmental delay. This is followed by administering the Denver Development Screening Test (DDST) if necessary (l, 2). We set out to validate R-PDQ among the preschool children living in the urban slums (Anganwadi Centers) covered by the Integrated Child Development Services in Lucknow, North India.