Table 1.
Baseline characteristics of 251 workers
| Characteristic | n (%) | Characteristic | Mean (SD/IQR) |
|---|---|---|---|
| Male | 230 (91.6) | Age, yr | 29.7 (9.8) |
| White ethnicity | 122 (48.6) | Body mass index, kg/m2 | 28.9 (6.1) |
| Hispanic ethnicity | 107 (42.6) | Systolic blood pressure, mm Hg | 120.0 (10.2) |
| Black ethnicity | 12 (4.8) | Diastolic blood pressure, mm Hg | 79.7 (8.8) |
| Other ethnicities | 10 (4.0) | Mean arterial pressure, mm Hg | 93.1 (8.7) |
| Current smokers | 67 (27.0) | Total cholesterol, mg/dl | 171.8 (37.8) |
| Alcohol intake | 110 (44.4) | HDL cholesterol, mg/dl | 46.3 (12.0) |
| Hypertension stage ≥1 | 125 (49.8) | Total-to-HDL cholesterol ratio | 3.91 (1.3) |
| Hypertension stage ≥2 | 46 (18.3) | Blood glucose, mg/dl | 94.3 (15.8) |
| Treated hypertension | 17 (6.8) | γ-glutamyltransferase, U/l | 22.6 (16.0, 33.0) |
| Diabetes mellitus | 12 (4.8) | Blood lead, μg/dl | 4.13 (2.40, 7.80) |
ACC, American College of Cardiology; AHA, American Heart Association; HDL, high-density lipoprotein; IQR, interquartile range.
Values are number of participants (%), arithmetic mean (SD), or geometric mean (IQR). Blood pressure was the average of 5 readings. Hypertension was categorized according to the 2017 ACC/AHA guideline, irrespective of treatment status.36 Mean arterial pressure was diastolic blood pressure plus one-third of pulse pressure. Diabetes mellitus was a self-reported diagnosis, a fasting blood glucose of ≥126 mg/dl, or use of antidiabetic drugs. To convert total or HDL serum cholesterol to mmol/l, multiply by 0.0259; to convert blood glucose to mmol/l, multiply by 0.0559.