Use of medications and vitamin-mineral supplements by children and youths.

The National Health Interview Survey was ad ministered in 1981 to a national probability sample of approximately 42,000 families. The questions on the Child Health Supplement of the survey were asked about one child in each family that had a child under age 18. The supplement included a series of questions about prescription and nonpre scription medications and vitamin and mineral sup plements. The respondents supplied information on 15,416 children under age 18.