© 1999 by European Journal of Public Health
METHODOLOGY |
Health-state utilities in a general population in relation to age, gender and socioeconomic factors
LENA LUNDBERG, MAGNUS JOHANNESSON, DAG G.L. ISACSON and LARS BORGQUIST
1 Department of Pharmacy, Pharmaceutical Services Research, Uppsala University Sweden
2 Centre for Health Economics, Stockholm School of Economics Sweden
3 Section of Pharmacoepidemioloy and Pharmacy Practice, Tromsø University Sweden
4 Department of Health and Society, Linköping University Sweden
Correspondence: Lena Lundberg, M.Sc., Department of Pharmacy, Pharmaceutical Services Research, BMC, Box 586, 751 23 Uppsala, Sweden, fax +46 18 4714154, e-mail: Lena.Lundberg{at}samfarm.uu.se
Background: This study examined health-related quality of life in a general population in relation to different socioeconomic variables. Method: The study was cross-sectional and was conducted in Uppsala county, Sweden, which had approximately 290,000 inhabitants in 1995. The study was based on a self-administered postal questionnaire sent to a random sample of 8,000 inhabitants aged 20–84 years, with a response rate of 68%. Health-related quality of life was measured on a 0 (dead) to 1 (full health) cardinal scale by two methods used to measure health-state utilities in economic evaluations, i.e. the rating scale method and the time trade-off method. Results: The mean age was 46 years and approximately 54% were women. Almost 70% were married or cohabitors. Approxiamtely 33% of the respondents had less than high-school education and 26% had a university degree. The mean income was SEK 13,000 per month and the proportion unemployed was 4.5%. The proportions of blue-collar workers, white-collar workers and self-employed were 40, 50 and 10% respectively. With the rating scale method, the mean health-state utility decreased from 0.86 in the youngest age group (20–29 years) to 0.63 (80–years) in the oldest age group and from 0.94 to 0.61 with the time trade-off method. Quality of life increased with income, education and social group and decreased with being single and unemployed. Conclusion: These methods are useful in assessing health-related quality of life in the general population and that quality of life varies substantially among different sodoeconomic groups.
Keywords: health-related quality of life, health-state utilities, rating scale, time trade-off, socioeconomic groups
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