Table 1.
Demographic and Clinical Characteristics at Baseline
| Patient characteristics | Total (N = 5,590) | Intervention (N = 2,794) | Control (N = 2,796) | P Value |
|---|---|---|---|---|
| Age (y), mean (SD) | 77.20 (10.90) | 77.25 (10.90) | 76.96 (10.90) | 0.29 |
| Male sex, n (%) | 2,173 (38.87%) | 1,088 (38.94%) | 1,085 (38.81%) | 0.90 |
| Race/ethnicity, n (%) | ||||
| White | 5,397 (96.56%) | 2,700 (96.67%) | 2,697 (96.46%) | 0.67 |
| Non-White | 192 (3.44%) | 93 (3.33%) | 99 (3.54%) | |
| Marital status, n (%) | ||||
| Married | 2,544 (45.51%) | 1,275 (45.63%) | 1,269 (45.39%) | 0.84 |
| Single or other | 3,046 (54.49%) | 1,519 (54.37%) | 1,527 (54.61%) | |
| Tobacco use, n (%) | ||||
| Current | 379 (6.78%) | 192 (6.87%) | 187 (6.69%) | 0.85 |
| Former | 2,434 (43.54%) | 1,225 (43.84%) | 1,209 (43.24%) | |
| Never | 2,777 (49.68%) | 1,377 (49.28%) | 1,400 (50.07%) | |
| Insurance status, n (%) | ||||
| Public | 4,229 (75.65%) | 2,133 (76.34%) | 2,096 (74.96%) | 0.38 |
| Private | 1,354 (24.22%) | 658 (23.55%) | 696 (24.89%) | |
| Self-pay | 7 (0.13%) | 3 (0.11%) | 4 (0.14%) | |
| Diabetes | 1,773 (32%%) | 879 (32%%) | 894 (32%) | |
| Charlson comorbidity index, median (IQR) | 2.00 (1.00-4.00) | 2.0 (1.0-4.0) | 2.0 (1.0-4.0) | 0.82 |
| KFRE characteristics | ||||
| KFRE risk, median (IQR) | 2.30 (1.10-5.60) | 2.20 (1.10-5.50) | 2.30 (1.20-5.70) | 0.35 |
| KFRE risk >10%, n (%) | 840 (15.03%) | 419 (15.00%) | 421 (15.06%) | 0.95 |
Abbreviations: IQR, Interquartile range; KFRE, kidney failure risk equation; SD, standard deviation.