Mortality, lifestyle and socio-economic status

Area of Science:

• Social Epidemiology
• Health Economics
• Biostatistics

Background:

• Socio-economic status (SES) is linked to health outcomes, but the precise role of lifestyle factors in this relationship is debated.
• Existing epidemiological models often underestimate the contribution of lifestyle choices to health inequalities.

Purpose of the Study:

• To investigate the determinants of premature mortality in Great Britain.
• To quantify the contribution of lifestyle choices to socio-economic inequality in mortality.
• To challenge prevailing epidemiological views on lifestyle's role in health gradients.

Main Methods:

• Utilized the British Health and Lifestyle Survey (1984-1985) with longitudinal follow-up (2003).
• Employed a behavioral model and a maximum simulated likelihood (MSL) approach for a multivariate probit (MVP) model.
• Applied Gini coefficient and decomposition techniques to analyze health inequality.

Main Results:

• Lifestyle choices were found to be strong contributors to mortality inequality, even after accounting for endogeneity.
• The direct role of socio-economic status in mortality inequality was reduced when lifestyle factors were considered.
• Findings contradict the common epidemiological assumption of a minor lifestyle contribution to socio-economic health gradients.

Conclusions:

• Lifestyle choices are a primary driver of premature mortality and socio-economic health inequalities in Great Britain.
• Policy interventions targeting lifestyle behaviors could significantly reduce health disparities.
• This study highlights the critical need to incorporate detailed lifestyle data into health inequality research.