Figure 5From: The Population Health Approach: health GIS as a bridge from theory to practiceAverage Income for Population Aged 15+ by 2001 Census Tracts, City A, British Columbia, Canada. The average income for population aged 15+ in year 2000 is displayed in different color by census tract in City A, British Columbia, Canada. The center of the City A, labeled by Community V, presenting the lowest income level, is defined as the catchment area of this study.Back to article page