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Construct validity of SF-6D health state utility values in an employed population


Baxter, S and Sanderson, K and Venn, A and Otahal, P and Palmer, AJ, Construct validity of SF-6D health state utility values in an employed population, Quality of Life Research, 24, (4) pp. 851-870. ISSN 1573-2649 (2015) [Refereed Article]

Copyright Statement

Copyright 2014 Springer

DOI: doi:10.1007/s11136-014-0823-4


BACKGROUND: Health utility values permit cost utility analysis in workplace health promotion; however, utility measures of working populations have not been validated.

AIM: To investigate construct validity of SF-6D health utility in a public service workforce.

METHODS: SF-12v2 Health Survey was administered to 3,408 randomly selected public service employees in Australia in 2010. SF-12 scores were converted to SF-6D health utility values. Associations and correlates of SF-6D with health, socio-demographic and work characteristics [comorbidities, body mass index (BMI), Kessler-10 psychological distress (K10), education, salary, effort-reward imbalance (ERI), absenteeism] were explored. Ceiling effects were analysed. Nationally representative employee SF-6D values from the Household, Income and Labour Dynamics in Australia (HILDA) survey (n = 11,234) were compared. All analyses were stratified by sex.

RESULTS: Mean (SE) age was 45.7 (0.35) males; 44.5 (0.22) females. Females represented 72 % of the sample. Mean (SE) health utility 0.792 (0.004); 0.771 (0.003) was higher in males. SF-6D demonstrated both a significant inverse association (p < 0.01) and negative correlations (female; male) with K10 (r = -0.63; r = -0.66), comorbidity count (r = -0.40; r = -0.33), ERI (r = -0.37; r = -0.34) and absenteeism (p < 0.005, r = -0.25; r = -0.21). Mean (SE) SF-6D in HILDA was 0.792 (0.002); 0.775 (0.003) males; females. Correlates and associations in all samples were similar. The general employed demonstrated a significant inverse association with age and positive association with salary. SF-6D was independent of BMI.

CONCLUSIONS: Psychological distress, comorbidity, effort-reward imbalance and absenteeism are negatively associated with employee health. SF-6D is a valid measure of perceived health states in working populations.

Item Details

Item Type:Refereed Article
Keywords:SF-6D, Health utility, SF-12, SF-36, Employee, Workplace health promotion 
Research Division:Economics
Research Group:Applied economics
Research Field:Health economics
Objective Division:Health
Objective Group:Public health (excl. specific population health)
Objective Field:Health status (incl. wellbeing)
UTAS Author:Baxter, S (Dr Siyan Baxter)
UTAS Author:Sanderson, K (Associate Professor Kristy Sanderson)
UTAS Author:Venn, A (Professor Alison Venn)
UTAS Author:Otahal, P (Mr Petr Otahal)
UTAS Author:Palmer, AJ (Professor Andrew Palmer)
ID Code:96163
Year Published:2015 (online first 2014)
Web of Science® Times Cited:6
Deposited By:Menzies Institute for Medical Research
Deposited On:2014-10-21
Last Modified:2018-03-24

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