Table 1.
Baseline demographic, clinical, and behavioral characteristics of study participants with and without incident CHD during follow-up (n = 555).
| Variable | Total subcohort (n = 555) |
|---|---|
| Arsenic exposure TWA (μg/L-year) | |
| 1–20 | 428 (77) |
| 20–30 | 86 (15) |
| 30–45 | 33 (6) |
| 45–88 | 8 (1) |
| Age (years, baseline) | 57 (46–64) |
| Ethnicity | |
| White non-Hispanic | 296 (53) |
| Hispanic | 259 (47) |
| Sex | |
| Male | 267 (46) |
| Female | 288 (54) |
| Income | |
| Low | 304 (47) |
| High | 251 (53) |
| First-degree family history of CHD | |
| No | 439 (81) |
| Yes | 116 (19) |
| BMI (n = 1 missing) | 26.0 (23.7, 29.4) |
| Diabetic (diagnosed at baseline visit) | |
| No | 546 (98) |
| Yes | 9 (2) |
| Current smoker | |
| Yes | 262 (48) |
| No | 293 (52) |
| Alcohol (g/week) | |
| ≤ 168 | 528 (95) |
| > 168 | 27 (5) |
| Water consumption (cups/day) | |
| < 5 | 225 (39) |
| ≥ 5 | 330 (61) |
| Physical activity | |
| Sedentary | 367 (69) |
| Active | 188 (31) |
| Serum LDL (mg/dL) (n = 10 missing) | 134 (108, 163) |
| Serum HDL (mg/dL) (n = 4 missing) | 46 (38, 56) |
| Serum triglycerides (mg/dL) (n = 4 missing) | 145 (102, 197) |
| Folate (mg) (dietary assessment estimate) | 257 (183, 137) |
| Selenium (mg) (dietary assessment estimate) | 98 (89, 48) |
| Values are n (%) or median (IQR). | |