Targeting health disparities: a model linking upstream determinants to downstream interventions

Area of Science:

• Social epidemiology
• Health disparities research
• Psychosocial factors in disease

Background:

• Adverse social and environmental factors contribute to significant health disparities.
• Understanding the pathways from societal influences to disease is crucial for intervention.

Purpose of the Study:

• To present a downward causal model linking population-level social/environmental factors to disease.
• To illustrate how these factors "get under the skin" through psychological and behavioral responses.
• To inform interventions addressing group differences in health outcomes.

Main Methods:

• Development of a downward causal model from population to disease.
• Integration of psychological and behavioral mediating factors.
• Case illustration using health disparities in aggressive premenopausal breast cancer among Black women.

Main Results:

• The model demonstrates a clear pathway from social/environmental exposures to disease.
• Psychological and behavioral responses are key mediators in this pathway.
• Specific disparities, such as in breast cancer mortality for Black women, can be explained.

Conclusions:

• A comprehensive, multi-level causal model is essential for understanding health disparities.
• Interventions targeting the entire chain of causation can effectively address group differences in health.
• This approach enhances the ability to tackle complex health inequities.