International journal of cardiology · 2016
Perceived stress, common carotid intima media thickness and occupational status: The Paris Prospective Study III.
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Wiernik Emmanuel, Lemogne Cédric, Thomas Frédérique, Perier Marie-Cécile, Guibout Catherine, Nabi Hermann, Laurent Stéphane, Pannier Bruno, Boutouyrie Pierre, Jouven Xavier, Empana Jean-Philippe
Аннотация
BACKGROUND: The association between psychological factors and cardiovascular diseases may depend upon socio-economic status. The present cross-sectional study examined the potential moderating role of occupational status on the association between perceived stress and intima-media thickness (IMT), using baseline examination data of the Paris Prospective Study III.
METHODS: IMT was measured in the right common carotid artery (CCA-IMT) 1cm below the bifurcation, in a zone free of discrete plaques, using non-invasive high-resolution echotracking. Perceived stress was measured with the 4-item Perceived Stress Scale. The association between perceived stress and CCA-IMT was explored using linear regression analysis and regression coefficients (b) were given per 1-point increment.
RESULTS: The study population included 5140 participants (3539 men) in the labor force aged 55.9years on average (standard deviation: 3.9), and who were free of personal history of cardiovascular disease and not on psychotropic drugs. There was a non-significant trend between perceived stress and CCA-IMT after adjustment for socio-demographic, self-rated health and cardiovascular risk factors (b [95% CI] 1.02 [-0.08;2.12]; p=0.069). However, multivariable stratified analysis indicates a significant and robust association between perceived stress and CCA-IMT in unemployed participants (b [95% CI] 3.30 [0.44;6.17]), and an association of same magnitude in working participants with low occupational status but without reaching statistical significance.
CONCLUSIONS: The association between perceived stress and CCA-IMT may depend upon employment status. These results may explain why psychological stress is more tightly linked to cardiovascular disease among individuals facing social adversity.
METHODS: IMT was measured in the right common carotid artery (CCA-IMT) 1cm below the bifurcation, in a zone free of discrete plaques, using non-invasive high-resolution echotracking. Perceived stress was measured with the 4-item Perceived Stress Scale. The association between perceived stress and CCA-IMT was explored using linear regression analysis and regression coefficients (b) were given per 1-point increment.
RESULTS: The study population included 5140 participants (3539 men) in the labor force aged 55.9years on average (standard deviation: 3.9), and who were free of personal history of cardiovascular disease and not on psychotropic drugs. There was a non-significant trend between perceived stress and CCA-IMT after adjustment for socio-demographic, self-rated health and cardiovascular risk factors (b [95% CI] 1.02 [-0.08;2.12]; p=0.069). However, multivariable stratified analysis indicates a significant and robust association between perceived stress and CCA-IMT in unemployed participants (b [95% CI] 3.30 [0.44;6.17]), and an association of same magnitude in working participants with low occupational status but without reaching statistical significance.
CONCLUSIONS: The association between perceived stress and CCA-IMT may depend upon employment status. These results may explain why psychological stress is more tightly linked to cardiovascular disease among individuals facing social adversity.