Steps
Step 1
Social Epidemiology Problem Selection and Study Design
The core task of this step is to select social epidemiology research questions and design the study. Social epidemiology studies impacts of social factors on population health, focusing on social determinants of health (SDH) and health equity.
• Select research topic: choose from social determinants of health (income, education, occupation, social class, social capital, social support, residential environment, race/ethnicity, gender), health equity, social distribution of health behaviors, community and health, life course perspective
• Theoretical framework construction: select theoretical models (SDH framework, social ecological model, life course theory, social capital theory, social gradient theory, fundamental cause theory); build conceptual framework; propose research hypotheses
• Study design: determine study design type (cross-sectional survey, cohort study, case-control, natural experiment, multilevel analysis, mixed methods); determine study population and sampling methods; select social factor measurement tools and health outcome indicators
Deliverable: Social epidemiology research design proposal (research questions, theoretical framework, study design, measurement tools, sampling plan) | Quality standard: Theoretically and practically significant research question, appropriate theoretical framework, scientific and reasonable design
Step 2
Social Factor Measurement and Data Collection
The core task of this step is to measure social factors and collect relevant data. Measurement of social factors is the difficulty and key of social epidemiology research, requiring operationalization of abstract social concepts into measurable variables.
• Social factor measurement: design SES indicators (income, education, occupation, composite SES index), social capital measures (personal social capital scale, community social capital scale), social support measures (SSRS), neighborhood environment measures (walkability, social cohesion, safety); perform reliability and validity testing
• Multi-source data collection: collect individual-level data (questionnaire survey, physical exam data, health records), community-level data (community surveys, census data, GIS spatial data), macro-level data (regional economic-social indicators, health statistics); build multilevel database
• Qualitative data collection: conduct in-depth interviews and focus group discussions; collect participants' subjective experiences and perceptions of social factors-health relationship; use Nvivo or ATLAS.ti for qualitative data management; perform triangulation
Deliverable: Social epidemiology study dataset (quantitative database, qualitative database, measurement tool manual, reliability/validity report) | Quality standard: Scientific and valid measurement tools, diverse and complementary data sources, strict quality control
Step 3
Health Inequality Analysis and Social Determinants Research
The core task of this step is to analyze health inequality status and study its social determinants. Quantify health disparities across different socioeconomic status, gender, race/ethnicity, and geographic regions.
• Health inequality measurement: calculate health inequality indices—Concentration Index, Slope Index of Inequality, Relative Index of Inequality, Gini coefficient, PAF; decompose health disparities by different social dimensions
• Social determinants analysis: use multilevel models to analyze impacts of individual-neighborhood-regional factors on health; use SEM to analyze pathways and mediating effects of social factors; test social gradient phenomenon
• Mediation and moderation analysis: analyze mediating roles of psychological factors (stress, depression, social support), behavioral factors (smoking, drinking, diet, exercise), biological factors (obesity, hypertension, inflammatory markers), and healthcare factors (access, utilization); test moderating effects
Deliverable: Health inequality and social determinants analysis report (inequality indices, multilevel analysis results, pathway diagrams, mediation analysis) | Quality standard: Standard inequality measurement methods, in-depth determinant analysis, clear pathway analysis
Step 4
Life Course Perspective and Interdisciplinary Comprehensive Analysis
The core task of this step is to study long-term impacts of social factors on health from a life course perspective and conduct interdisciplinary comprehensive analysis. Life course perspective focuses on impacts of early life social exposures on lifelong health.
• Life course analysis: apply life course theory to analyze critical period, cumulative effect, trajectory effect, life transitions impacts on health; use growth curve models and GBTM to analyze developmental trajectories
• Interdisciplinary integration: integrate theories and methods from sociology (social stratification, social capital), economics (income-health relationship, labor economics), psychology (stress process theory, coping resources), biology (stress axis, epigenetics), epidemiology; build multidimensional explanatory framework
• Historical and comparative analysis: perform historical comparative analysis (changes in health inequality over time), cross-national/regional comparative analysis (health disparities under different welfare regimes, different social policies); analyze impacts of social policies (education, healthcare, social security) on health equity
Deliverable: Life course and interdisciplinary comprehensive analysis report (developmental trajectory analysis, interdisciplinary explanatory framework, comparative analysis results) | Quality standard: In-depth life course analysis, deep interdisciplinary integration, insightful comparative analysis
Step 5
Social Epidemiology Research Report and Health Equity Policy Recommendations
The core task of this step is to write a social epidemiology research report and propose policy recommendations for promoting health equity. Social epidemiology should not only explain causes of health inequality but also provide scientific evidence and policy solutions.
• Write research report: compose complete report following social epidemiology research standards, including theoretical framework, study design, methods, main findings, discussion and conclusion; systematically present mechanisms and pathways of social factors affecting health; minimum 4000 words
• Health equity policy recommendations: based on findings, propose SDH intervention strategies; suggest policies from improving socioeconomic conditions (poverty reduction, education equity, employment security), improving living and working environments, strengthening healthcare equity, empowering communities and individuals
• Health impact assessment: apply research findings to health impact assessment (HIA); evaluate potential impacts of social policies (minimum wage, housing policy, education reform) on health equity; provide health perspective for policy-making
Deliverable: Social epidemiology research report, health equity policy recommendation paper, health impact assessment report | Quality standard: Strong academic research report, targeted and feasible policy recommendations, scientific health impact assessment