Table 1.
Participant baseline characteristics (n=443)
| Variable | Self-Rated Health | |
|---|---|---|
| Good to Excellent | Fair to Poor | |
| Participants (n) | 207 | 236 |
| Age (yr) | 62.3±12.8 | 62.2±12.1 |
| Black race | 38 (18.3) | 64 (27.3) |
| Women | 36 (17.3) | 40 (17.0) |
| Body mass index (mg/kg2) | 30.4±6.6 | 32.4±7.6 |
| Systolic BP (mmHg) | 134.3±22.0 | 136.5±23.6 |
| Current smoking | 30 (14.7) | 44 (19.4) |
| Current alcohol use | 72 (36.9) | 57 (25.7) |
| Education status | ||
| Less than high school | 5 (2.6) | 15 (6.9) |
| Graduated high school | 132 (68.8) | 152 (69.7) |
| College degree or higher | 55 (28.7) | 51 (23.4) |
| Marital status | ||
| Married | 77 (39.1) | 85 (37.8) |
| Never married | 43 (21.8) | 48 (21.3) |
| Widowed | 15 (7.6) | 20 (8.9) |
| Divorced/separated | 62 (31.5) | 72 (32.0) |
| Work status | ||
| Employed full-time | 27 (19.2) | 12 (7.3) |
| Employed part-time | 17 (12.1) | 9 (5.5) |
| Unemployed | 28 (19.9) | 43 (26.2) |
| Retired | 68 (48.2) | 89 (54.3) |
| On disability | 1 (0.7) | 11 (6.7) |
| Exercise frequency in previous month | ||
| None | 28 (21.4) | 47 (31.3) |
| Once per week or less | 38 (29.0) | 37 (24.7) |
| More than once per week | 65 (49.7) | 66 (44.0) |
| Six-minute walk speed (m/s) | 0.11±0.03 | 0.09±0.04 |
| eGFR, CKD-EPI equation (ml/min per 1.73 m2) | 38.2±12.2 | 36.5±13.0 |
| Prevalent disease | ||
| Diabetes mellitus | 90 (43.3) | 152 (64.7) |
| Hypertension | 194 (93.3) | 234 (99.6) |
| Coronary artery disease | 80 (38.5) | 126 (53.6) |
| Medication use | ||
| Angiotensin-converting enzyme inhibitor use | 100 (48.1) | 136 (57.9) |
| Angiotensin II receptor blocker use | 67 (32.2) | 86 (36.6) |
| β-Blocker | 90 (43.3) | 159 (67.7) |
| Phosphate binder | 26 (12.5) | 31 (13.2) |
| Statin | 127 (61.1) | 147 (62.6) |
| Antidepressant | 58 (27.9) | 96 (40.9) |
| Laboratory measures | ||
| All participants | ||
| Albumin (g/dl) | 3.9±0.6 | 3.7±0.6 |
| Urine albumin to creatinine ratio (mg/g) | 86.3 (13.4, 603.0) | 204.9 (25.6, 1016.2) |
| Calcium (mg/dl) | 9.0±0.8 | 8.9±0.7 |
| Cystatin C (mg/dl) | 1.9±0.9 | 2.2±1.2 |
| Bicarbonate (mmol/L) | 24.1±3.5 | 24.3±3.8 |
| C-reactive protein (mg/L) | 2.1 (0.9, 6.4) | 3.2 (1.2, 6.9) |
| Uric acid (mg/dl) | 7.6±1.8 | 7.9±1.9 |
| Hemoglobin (g/dl) | 12.9±2.0 | 12.5±1.8 |
| Anion gap (mg/dl) | 11.4±3.7 | 11.2±2.3 |
| Phosphorus (mg/dl) | 3.6±0.6 | 3.8±0.8 |
| Random subset of 210 participants | ||
| Fibroblast growth factor-23 (pg/ml) | 61.7 (45.9, 93.5) | 65.0 (49.5, 101.5) |
| 25-Hydroxyvitamin D (ng/ml) | 31.2±15.8 | 27.8±13.6 |
| Parathyroid hormone (pg/ml) | 93.4±69.3 | 114.1±94.1 |
Data are presented as the mean±SD, n (%), or median (interquartile range), unless otherwise indicated. CKD-EPI, CKD Epidemiology Collaboration.