A dependent child is defined as follows: 2001 Person in a household aged 0 to 15 (whether or not in a family); or a person aged 16 to 18 who is a full time student in a family with parent(s). 1991 Person aged 0-15 in a household; or person aged 16-18, never married, in full-time education and economically inactive 1981 Child in family who is under 16 years of age; or under 19 years of age, never-married and classified from the question on economic activity last week as a student. 1971 Child in family who is under 15 years of age; or between 15 and 24 years of age and classified as ‘student’ S2W-17779