Table 1.
Cohort with and without CKD
| CKD present (n = 17,463) |
CKD absent (n = 17,519) |
p value |
|
|---|---|---|---|
| MDRD eGFR | 49.27±19.32 | 85.48±23.50 | <0.001 |
| eGFR | |||
| <15 | 467 (2.7) | <0.001 | |
| 15–29 | 1,162 (6.7) | ||
| 30–44 | 3,839 (21.9) | ||
| 45–59 | 11,995 (68.7) | ||
| ≥60 | 0 (0.00) | 17,519 (100.0) | |
| Age, years | 70.25±14.00 | 52.49±15.61 | <0.001 |
| Age group | |||
| 18–49 years | 1,652 (9.5) | 7,527 (42.9) | <0.001 |
| 50–59 years | 2,054 (11.8) | 4,290 (24.5) | |
| 60–69 years | 3,766 (21.6) | 3,087 (17.6) | |
| 70–79 years | 5,208 (29.8) | 1,774 (10.1) | |
| 80+ years | 4,783 (27.4) | 841 (4.8) | |
| Race | |||
| Caucasian | 15,422 (88.3) | 14,133 (80.7) | <0.001 |
| African-American | 1,610 (9.2) | 2,556 (14.6) | |
| Hispanic | 292 (1.7) | 538 (3.1) | |
| Asian | 127 (0.7) | 278 (1.6) | |
| Native American | 12 (0.07) | 14 (0.08) | |
| Gender | |||
| Female | 10,844 (62.1) | 9,577 (54.7) | <0.001 |
| Male | 6,619 (37.9) | 7,942 (45.3) | |
| Hypertension | 13,238 (75.8) | 6,777 (38.7) | <0.001 |
| Anemia | 7,268 (41.6) | 2,441 (13.9) | <0.001 |
| Diabetes | 6,325 (36.2) | 3,087 (17.6) | <0.001 |
| CVD | 12,467 (71.4) | 6,443 (36.8) | <0.001 |
Values are expressed as mean ± standard deviation for age and MDRD-estimated GFR. Otherwise, values expressed as n (%). Differences between groups for categorical and continuous variables were examined using χ2 tests Student's t tests, respectively. MDRD-estimated GFRs are measured in ml/min/1.73 m2. Comorbid conditions (hypertension, anemia, diabetes, and CVD) are based on ICD-9 diagnosis codes identified through Strong Health medical records.