Citation

Talala KM, Huurre TM, Laatikainen TKM, Martelin TP, Ostamo AI, Prättälä RS. BMC Public Health 2011; 11: e138.

Copyright

(Copyright © 2011, Holtzbrinck Springer Nature Publishing Group - BMC)

DOI

10.1186/1471-2458-11-138

PMID

21356041

PMCID

PMC3053248

Abstract

BACKGROUND: Psychological factors associated with low social status have been proposed as one possible explanation for the socio-economic gradient in health. The aim of this study is to explore whether different indicators of psychological distress contribute to socio-economic differences in cause-specific mortality.
METHODS: The data source is a nationally representative, repeated cross-sectional survey, "Health Behaviour and Health among the Finnish Adult Population" (AVTK). The survey results were linked with socio-economic register data from Statistics Finland (from the years 1979-2002) and mortality follow-up data up to 2006 from the Finnish National Cause of Death Register. The data included 32,451 men and 35,420 women (response rate 73.5%). Self-reported measures of depression, insomnia and stress were used as indicators of psychological distress. Socio-economic factors included education, employment status and household income. Mortality data consisted of unnatural causes of death (suicide, accidents and violence, and alcohol-related mortality) and coronary heart disease (CHD) mortality. Adjusted hazard ratios were calculated using the Cox regression model.
RESULTS: In unnatural mortality, psychological distress accounted for some of the employment status (11-31%) and income level (4-16%) differences among both men and women, and for the differences related to the educational level (5-12%) among men; the educational level was associated statistically significantly with unnatural mortality only among men. Psychological distress had minor or no contribution to socio-economic differences in CHD mortality.
CONCLUSIONS: Psychological distress partly accounted for socio-economic disparities in unnatural mortality. Further studies are needed to explore the role and mechanisms of psychological distress associated with socio-economic differences in cause-specific mortality.

Language: en

Keywords

Humans; Adult; Female; Male; Middle Aged; Finland; Adolescent; Cause of Death; Mortality; Young Adult; Health Surveys; Proportional Hazards Models; Social Class; Follow-Up Studies; Stress, Psychological