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Fig. 3 | BMC Medical Research Methodology

Fig. 3

From: National surveillance of stroke quality of care and outcomes by applying post-stratification survey weights on the Get With The Guidelines-Stroke patient registry

Fig. 3

Treemaps of weighting stratified by U.S. Census division and rural/teaching hospital status. a, b: The treemaps provide a perspective of population size (box size) across region and hospital characteristic to describe the target population. The average size of the post-stratification weights used for each observation within Get With The Guideline-Stroke using the post-stratification approach. The more yellow and red regions of the treemaps highlight under-represented populations that required larger relative weights to model the target national population

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