Table 1.
Descriptive information for the 81 participants, and urinary oxidative stress biomarkers collected during up to 4 clinic visits (n=231)
| (a) Descriptive information of 81 participants | |||
| Variables | Mean (SD) | Range | |
| Age (yrs) | 72.7 (8.4) | 46.7 – 90.7 | |
| BMI (kg/m2) | 29.8 (5.8) | 18.8 – 50.8 | |
| N (%) | |||
| Race | White | 72 (88.9%) | |
| Non-White | 9 (11.1%) | ||
| Diabetes | Yes | 20 (24.7%) | |
| No | 61 (75.3%) | ||
| Heart disease | Yes | 41 (50.6%) | |
| No | 40 (59.4%) | ||
| (b) Seasons for clinic visits | |||
| N (%) | |||
| Season | Winter | 41 (17.7%) | |
| Spring | 52 (22.5%) | ||
| Summer | 72 (31.2%) | ||
| Fall | (28.6%) | ||
| (c) Biomarkers for 231 observations | |||
| Biomarker | Median (25 – 75 percentile) | Range | |
| 8-OHdG (mg/mL) | 4.4 (2.6 – 7.5) | 0.5 – 28.1 | |
| MDA (μM) | 12.6 (8.9 – 19.7) | 1.2 – 275.6 | |
| Creatinine (mg/dL) | 114.0 (71.9 – 158.1) | 10.1 – 626.8 | |