Table 1.
Baseline characteristics of the patients included in the study and patients excluded on the basis of having fewer than five clinical notes in the year before the first nephrology visit
| Characteristic | No. (%) or Mean (SD) | |
|---|---|---|
| All Patients Included in Study | Patients Excluded for Having Fewer Than Five Clinical Notes in 1 yr before First Nephrology Visit | |
| No. of patients | 4013 (100%) | 669 (100%) |
| Age, yr | 59.3 (16.6) | 53.9 (16.8) |
| Women | 2347 (58.4%) | 348 (52.0%) |
| Black | 568 (14.2%) | 103 (15.4%) |
| Baseline eGFR calculated by CKD-EPI formula, ml/min per 1.73 m2 | ||
| ≥90 | 1014 (25.3%) | 171 (25.6%) |
| 60–89 | 1225 (30.5%) | 162 (24.2%) |
| 30–59 | 1263 (31.5%) | 180 (26.9%) |
| 15–29 | 363 (9.0%) | 94 (14.1%) |
| <15 | 148 (3.7%) | 62 (9.3%) |
| Microalbumin-to-creatinine ratio, μg/mg, median (range) | 33.4 (<30–12,510) | 75.3 (<30–7932) |
| Time before first nephrology visit, yr, median (range) | 5.4 (0–10.2) | 1.0 (0–10.0) |
| Follow-up time after nephrology visit, yr, median (range) | 1.2 (0–10.2) | 2.3 (0–10.3) |
| No. of notes in the year before first nephrology visit, median (range) | 19 (5–293) | 3 (1–4) |
| No. of concepts extracted per patient, median (range) | 745 (3–4062) | 0 (0–515) |
CKD-EPI, Chronic Kidney Disease Epidemiology Collaboration.