Table 1.
Characteristics of United States veterans with incident urinary stone disease from 2007 to 2013
| Characteristics | Without 24-h Urine Testing (N=113,186; 87%) | With 24-h Urine Testing (N=17,303; 13%) |
|---|---|---|
| Age (mean±SD, yr) | 61±14 | 58±12 |
| Sex (N, %) | ||
| Male | 107,383 (95%) | 16,042 (93%) |
| Female | 5803 (5%) | 1261 (7%) |
| Race (N, %) | ||
| White | 87,541 (77%) | 13,803 (80%) |
| Black | 12,540 (11%) | 1521 (9%) |
| Other or unknown | 13,105 (12%) | 1979 (11%) |
| Laboratory data | ||
| BMI (mean±SD, kg/m2) | 29.9±6.2 | 30.7±6.3 |
| eGFR (mean±SD, ml/min per 1.73m2) | 73±25 | 77±23 |
| Creatinine (mean±SD, mg/dl) | 1.3±2.7 | 1.7±1.4 |
| Potassium (mean±SD, mEq/L) | 4.2±0.5 | 4.2±1.1 |
| Sodium (mean±SD, mEq/L) | 139±4 | 139±6 |
| Bicarbonate (mean±SD, mEq/L) | 27±4 | 27±3 |
| Calcium (mean±SD, mg/dl) | 9.3±1.4 | 10.2±1.6 |
| Albumin (mean±SD, g/dl) | 4.1±15.1 | 4.1±1.2 |
| Comorbidities (N, %) | ||
| Hypertension | 76,811 (68%) | 10,944 (63%) |
| Gout | 6467 (6%) | 1005 (6%) |
| Osteoporosis | 2530 (2%) | 484 (3%) |
| Osteopenia | 2259 (2%) | 441 (3%) |
| Diabetes mellitus | 42,214 (37%) | 6690 (39%) |
| CKD | 3769 (3%) | 430 (2%) |
| Cardiovascular disease | 9608 (8%) | 947 (5%) |
| Baseline medications (N, %) | ||
| Thiazide or thiazide-like diuretics | 19,188 (17%) | 2815 (16%) |
| Alkali therapy | 1000 (1%) | 192 (1%) |
| Allopurinol | 5861 (5%) | 890 (5%) |
| Geographic region (N, %) | ||
| Midwest | 27,962 (25%) | 4795 (28%) |
| Northeast | 18,737 (17%) | 2244 (13%) |
| Southeast | 43,521 (38%) | 5314 (31%) |
| West | 22,966 (20%) | 4950 (28%) |
BMI, body mass index.