Mechanisms of life-course socioeconomic inequalities in adult systemic inflammation: Findings from two cohort studies.

Details

Serval ID
serval:BIB_8A8D5AE4EB47
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Mechanisms of life-course socioeconomic inequalities in adult systemic inflammation: Findings from two cohort studies.
Journal
Social science & medicine
Author(s)
Carmeli C., Steen J., Petrovic D., Lepage B., Delpierre C., Kelly-Irving M., Bochud M., Kivimäki M., Vineis P., Stringhini S.
ISSN
1873-5347 (Electronic)
ISSN-L
0277-9536
Publication state
Published
Issued date
01/2020
Peer-reviewed
Oui
Volume
245
Pages
112685
Language
english
Abstract
Disadvantaged socioeconomic conditions in childhood heighten systemic inflammatory levels in adulthood; however, life-course mechanisms underlying this association are largely unknown. In the present observational study, we investigated the roles of adulthood socioeconomic and lifestyle factors in mediating this association. Participants were from two prospective Swiss population-based cohorts (N = 5,152, mean age 60 years). We estimated the total effect of paternal occupational position on adult heightened systemic inflammatory levels (C-reactive protein>3 mg/L), and the indirect effects via adulthood socioeconomic positions (SEPs: education and occupational position), financial hardship, and lifestyle factors (body mass index, smoking status, physical inactivity, and alcohol consumption). We estimated odds ratio (OR) and proportion mediated using counterfactual-based mediation models. Individuals whose father had a low occupational position had an OR of 1.51 [95% confidence interval (CI): 1.25, 1.84] for heightened inflammation compared to their more advantaged counterparts. This was jointly mediated (33 [95% CI: 14, 69]%) by adulthood SEPs, whereby the pathway through education followed by occupational position mediated 30 [95% CI: 11, 64]%, while the pathway via occupational position only mediated 3 [95% CI: 4, 13]%. Individuals with the lowest life-course SEPs had an OR of 2.27 [95% CI: 1.71, 2.98] for heightened inflammation compared to having the highest life-course SEPs. This was jointly mediated (63 [95% CI: 44, 97]%) by financial hardship and lifestyle factors. Our study supports a cumulative effect of life-course SEPs on adult heightened systemic inflammation along the pathway paternal occupational position -> education -> adult occupational position. Financial hardship and lifestyle factors in adulthood mediate half of that effect.
Keywords
Childhood/adulthood socioeconomic positions, Counterfactual mediation, Financial hardship, Heightened inflammation, Lifestyle factors
Pubmed
Web of science
Create date
04/12/2019 23:28
Last modification date
20/01/2021 7:26
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