Table 1. Mean, Median, Range, and Threshold of High-Risk Quartile for 9 Biomarkers of Allostatic Load at Baseline, Study of African American Women Participating in a Church-Based Diabetes Prevention Program on Weight Reduction (N = 220), Dallas, Texas, 2014–2016a .
| Variable | Mean (SD) | Median (Range) | High-Risk Quartileb |
|---|---|---|---|
| Systolic blood pressure, mm Hg | 128.4 (19.3) | 125.5 (97–216) | >138.5 |
| Diastolic blood pressure, mm Hg | 82.3 (10.8) | 81.4 (56.6–120) | >88.5 |
| HDL cholesterol, mg/dL | 55.6 (13.9) | 54 (27–100) | <46 |
| Total cholesterol/HDL cholesterol ratio | 3.3 (0.9) | 3.52 (1.26–6.42) | >3.77 |
| Hemoglobin A1c, % | 6.0 (0.7) | 5.9 (1.0–9.4) | >6.4 |
| Body mass index, kg/m2 | 36.7 (8.4) | 34.5 (25.0–84.6) | >40.6 |
| Cortisol, ng/mL | 2.7 (3.3) | 2.1 (0.1–38.7) | >2.9 |
| Waist circumference, in | 41.3 (6.1) | 40.4 (29.0–60.0) | >44.0 |
| Triglycerides, mg/dL | 113.4 (58.9) | 95 (45–331) | >140 |
Abbreviation: HDL, high-density lipoprotein; SD, standard deviation.
a
Missing values varied from 1% to 12% for the 9 biomarkers.
b
A participant was categorized as high risk for a given biomarker if the biomarker value was in the highest quartile of our sample, except for HDL cholesterol, for which the lowest quartile was considered high risk. Quartiles were determined on the basis of data for each biomarker in our sample of 220 African American women.