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Table 3 Weighting and ranges for allocation to tracts

From: Evaluating geographic imputation approaches for zip code level data: an application to a study of pediatric diabetes

Tract ID Tract Area in ZCTA (km2) Proportion Tract Area in ZCTA Cumulative Proportion Range
T1 171.37 0.84 0.84 0.00 - 0.84
T2 15.75 0.07 0.91 0.84 - 0.91
T3 9.77 0.05 0.96 0.91 - 0.96
T4 5.61 0.03 0.99 0.96 - 0.99
T5 0.03 0.01 1.00 0.99 - 1.00