Appendix Table 1.
Baseline Characteristics by Interpretation of Baseline Dipstick Urinalysis
| Baseline variables | Interpretation of dipstick urinalysis for hematuria | P | |||
|---|---|---|---|---|---|
| Negative (n=6654) | Trace (n=840) | 50 Ery/μl (n=226) | 250 Ery/μl (n=123) | ||
| Age in years, mean (SD) | 40 (10.04) | 44.24 (10.16) | 46.13 (9.70) | 45.08 (10.22) | < 0.01 |
| BMI in kg/m2, mean (SD) | 19.44 (2.91) | 19.33 (3.07) | 19.27 (2.87) | 19.36 (4.27) | 0.62 |
| SBP in mmHg, mean (SD) | 116.91 (16.19) | 117.55 (19.81) | 121.01 (20.61) | 121.79 (21.41) | < 0.01 |
| DBP in mmHg, mean (SD) | 73.92 (10.87) | 74.62 (12.08) | 75.43 (11.51) | 77.14 (13.99) | < 0.01 |
| Urinary creatinine in mg/dl, mean (SD) | 57.94 (46.09) | 76.03 (53.14) | 78.94 (49.70) | 85.92 (49.71) | < 0.01 |
| Education in years, mean (SD) | 3.81 (4.06) | 3.85 (4.19) | 3.34 (4.06) | 3.67 (3.87) | 0.37 |
| Cigarette use (%) | < 0.01 | ||||
| Never | 29.9 | 21.2 | 19.0 | 25.2 | |
| Past | 11.2 | 13.6 | 16.4 | 13.8 | |
| Current | 58.9 | 65.2 | 64.6 | 61.0 | |
| Occupational dye exposure (%) | 14.9 | 16.2 | 18.1 | 14.6 | 0.46 |
| Baseline well As in μg/l, mean (SD) | 79.11 (102.42) | 103.72 (123.43) | 90.82 (102.06) | 101.96 (152.14) | < 0.01 |
| Baseline urinary As in μg/l, mean (SD) | 116.49 (138.91) | 145.74 (138.70) | 142.54 (140.79) | 165.06 (174.27) | < 0.01 |