Table 1 Descriptive characteristics for the subset of NC-CARES with (1) available eGFRcr values and (2) cases and controls for patients diagnosed with CKD
Patients with eGFRcr N = 7,722 | |||
Characteristics | n (%) | ||
 Female | 4,498 (58.2) | ||
 Male | 3,227 (41.8) | ||
 Caucasian | 5,000 (64.7) | ||
 African American | 2,128 (27.6) | ||
 Other | 596 (7.72) | ||
 Diabetes | 1,976 (25.6) | ||
 Hypertension | 4,453 (57.6) | ||
Mean (SD or %) | |||
 Age | 53.6 (17.9) | ||
 Education | 36.3 (24.8) | ||
 Older housing | 40.6 (23.3) | ||
 Income (USD) | 58,005.9 (29,470.8) | ||
 Median house value (USD) | 203,462.7 (119,096.6) | ||
 Poverty (%) | 16.6 (13.8) | ||
 Public assistance (%) | 1.99 (3.05) | ||
 Urbanicity | 62.9 (41.8) | ||
Median (IQR) | |||
 PM2.5 (µg/m3) | 9.52 (1.57) | NO2 (ppb) | 12.8 (8.68) |
 O3 (ppb) | 39.7 (3.21) |  |  |
Patients with CKD and never-diagnosed N = 4,952 | |||
| Â | Non-CKD | CKD | Total |
n (%) | |||
 Female | 2,199 (55.9) | 553 (54.5) | 2,752 |
 Male | 1,738 (44.2) | 462 (45.5) | 2,200 |
 Caucasian | 2,279 (57.9) | 560 (55.2) | 2,839 |
 African American | 1,419 (36.0) | 415 (40.9) | 1,834 |
 Other Race | 239 (6.1) | 40 (3.9) | 279 |
 Diabetes | 1,049 (26.6) | 476 (46.9) | 1,525 |
 Hypertension | 2,422 (61.5) | 860 (84.7) | 3,282 |
Mean (SD) | |||
 Age | 65.4 (16.4) | 65.3 (16.4) | 65.4 (16.4) |
Area level covariates* | |||
 Income | 58,199.3 (27,147.3) | 54,710.5 (25,511.6) | 57,484.2 (26,854.7) |
 Poverty (%) | 16.1 (12.6) | 17.6 (13.9) | 16.41 (12.9) |
 Urbanicity | 66.7 (40.7) | 60.9 (42.1) | 65.47 (41.1) |
 Public assistance (%) | 1.7 (2.7) | 2.0 (2.9) | 1.75 (2.8) |
 Median house value | 211,306.8 (120,322.1) | 197,977.3 (117,589.7) | 208,574.7 (119,876.2) |
 Education | 38.2 (25.47) | 35.0 (24.8) | 37.5 (25.4) |
Median (IQR) | |||
 PM2.5 (µg/m3) | 11.31 (3.33) | 11.18 (3.64) | 11.27 (3.39) |
 O3 (ppb) | 41.66 (3.35) | 41.41 (3.39) | 41.59 (3.37) |
 NO2 (ppb) | 15.44 (10.77) | 14.11 (10.82) | 15.10 (10.80) |