Table 2:
Average (and standard deviation) of Medicare population size, Medicare health outcome rates, pollutant exposures and confounders in the full dataset, only the discarded/trimmed zipcodes, and the retained/untrimmed zipcodes used for estimation.
| Full Dataset | Discarded Units | Retained Units | |
|---|---|---|---|
| Medicare population size | 1102.78 (1537.59) | 1470.08 (1815.02) | 860.2 (1265.74) |
| FFS person-months | 10791.81 (14548.64) | 13723.07 (16799.63) | 8855.88 (12475.97) |
| Mortality (rate per 1,000) | 52.19 (21.33) | 52.66 (22.19) | 51.88 (20.75) |
| Dementia (rate per 1,000) | 1.58 (1.28) | 1.7 (1.46) | 1.5 (1.15) |
| CVD (rate per 1,000) | 6.77 (2.71) | 6.8 (2.8) | 6.75 (2.65) |
| Factual PM2.5 (μg/m3) | 10.48 (3.79) | 11.47 (3.61) | 9.83 (3.76) |
| Factual O3 (ppb) | 47.72 (6.58) | 47.08 (6.87) | 48.15 (6.34) |
| Counterfactual PM2.5 (μg/m3) | 14.12 (5.01) | 17.32 (4.7) | 12.01 (3.99) |
| Counterfactual O3 (ppb) | 53.57 (7.69) | 57.85 (7.56) | 50.74 (6.34) |
| poverty (proportion) | 0.11 (0.1) | 0.11 (0.11) | 0.11 (0.08) |
| popdensity (per mi2) | 1155.93 (4396.92) | 2319.84 (6676.24) | 387.23 (1086.17) |
| housevalue (USD) | 104021.52 (83107.11) | 133984.69 (111102.05) | 84232.56 (48290.31) |
| black (proportion) | 0.08 (0.16) | 0.09 (0.18) | 0.06 (0.14) |
| income (USD) | 40193.35 (15989.31) | 45151 (19837.6) | 36919.11 (11733.04) |
| ownhome (proportion) | 0.75 (0.15) | 0.72 (0.19) | 0.78 (0.11) |
| hispanic (proportion) | 0.06 (0.12) | 0.08 (0.16) | 0.05 (0.1) |
| education (proportion) | 0.38 (0.18) | 0.37 (0.19) | 0.39 (0.17) |
| northeast (proportion) | 0.18 (0.39) | 0.37 (0.48) | 0.06 (0.23) |
| midwest (proportion) | 0.32 (0.47) | 0.26 (0.44) | 0.36 (0.48) |
| south (proportion) | 0.34 (0.47) | 0.23 (0.42) | 0.42 (0.49) |
| west (proportion) | 0.16 (0.36) | 0.14 (0.35) | 0.16 (0.37) |