The Family Affluence Scale as a Measure of National Wealth: Validation of an Adolescent Self-Report Measure |
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Authors: | William Boyce Torbjorn Torsheim Candace Currie Alessio Zambon |
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Institution: | (1) Social Program Evaluation Group, Queen’s University, McArthur Hall, 511 Union Street, K7L 3N6 Kingston , Ontario, Canada |
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Abstract: | One explanation for a lack of consistency in SES-health associations in youth is that parent-based income and occupation measures
are inadequate. The Family Affluence Scale (FAS), a four-item measure of family wealth, has been developed in the WHO Health
Behaviour in School-aged Children Study as an alternative measure. The aim of this paper is to examine the criterion and construct
validity of the FAS as a measure of national absolute wealth in 35 countries. A general measure of national wealth, Gross
Domestic Product (GDP) for the year 2001, corrected for Purchasing Power Parity, was used as a gold standard. For the composite
FAS index, there was a similar strength in country rank order correlation (0.87) as with GDP, and a Kappa agreement coefficient
of 0.57, indicating good criterion validity. FAS index associations with national health indicators were systematically higher
than the values obtained with GDP. These features suggest that FAS can be used with confidence in aggregate analyses of HBSC
data that focus on relationships between SES and adolescent health. |
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Keywords: | adolescents health behaviour socioeconomic measures validation study |
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