Socioeconomic Gradient in Health and Global Inequality (10A) Practice Test

A research team evaluated heat-related illness during a summer heatwave. Hospital visits for heat illness were highest in the lowest-income neighborhoods and decreased with increasing neighborhood income. The team found that lower-income areas had less tree cover and fewer households with functional air conditioning. Globally, the team noted that similar gradients are sharper in cities with limited public cooling centers and weaker tenant protections.

What conclusion is most consistent with the socioeconomic gradient illustrated?

Researchers studied two countries with similar GDP per capita but different income inequality. In both countries, childhood vaccination is free at public clinics. Country X has higher income inequality; Country Y has lower inequality and broader paid parental leave. In Country X, vaccination completion is lower among the poorest households and rises steadily with household income. In Country Y, completion is high across all income levels with only a small gradient. Interviews in Country X highlighted transportation costs, inability to take time off work, and mistrust due to prior negative experiences with institutions.

What conclusion is most consistent with the socioeconomic gradient illustrated?