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BMC Public Health
Published in: BMC Public Health 1/2016

Open Access 01-12-2016 | Research article

Mental symptoms and cause-specific mortality among midlife employees

Authors: Eero Lahelma, Olli Pietiläinen, Ossi Rahkonen, Jouni Lahti, Tea Lallukka

Published in: BMC Public Health | Issue 1/2016

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Abstract

Background

Mental symptoms are prevalent among populations, but their associations with premature mortality are inadequately understood. We examined whether mental symptoms contribute to cause-specific mortality among midlife employees, while considering key covariates.

Methods

Baseline mail survey data from 2000–02 included employees, aged 40–60, of the City of Helsinki, Finland (n = 8960, 80 % women, response rate 67 %). Mental symptoms were measured by the General Health Questionnaire 12-item version (GHQ-12) and the Short Form 36 mental component summary (MCS). Covariates included sex, marital status, social support, health behaviours, occupational social class and limiting long-standing illness. Causes of death by the end of 2013 were obtained from Statistics Finland (n = 242) and linked individually to survey data pending consent (n = 6605). Hazard ratios (HR) and 95 % confidence intervals (95 % CI) were calculated using Cox regression analysis.

Results

For all-cause mortality, only MCS showed a weak association before adjustments. For natural mortality, no associations were found. For unnatural mortality (n = 21), there was a sex adjusted association with GHQ (HR = 1.96, 95 % CI = 1.45–2.64) and MCS (2.30, 95 % CI = 1.72–3.08). Among unnatural causes of death suicidal mortality (n = 11) was associated with both GHQ (2.20, 95 % CI = 1.47–3.29) and MCS (2.68, 95 % CI = 1.80–3.99). Of the covariates limiting long-standing illness modestly attenuated the associations.

Conclusions

Two established measures of mental symptoms, i.e. GHQ-12 and SF-36 MCS, were both associated with subsequent unnatural, i.e. accidental and violent, as well as suicidal mortality. No associations were found for natural mortality due to diseases. These findings need to be corroborated in further populations. Supporting mental health through workplace measures may help counteract subsequent suicidal and other unnatural mortality among midlife employees.
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Metadata
Title
Mental symptoms and cause-specific mortality among midlife employees
Authors
Eero Lahelma
Olli Pietiläinen
Ossi Rahkonen
Jouni Lahti
Tea Lallukka
Publication date
01-12-2016
Publisher
BioMed Central
Published in
BMC Public Health / Issue 1/2016
Electronic ISSN: 1471-2458
DOI
https://doi.org/10.1186/s12889-016-3816-0

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