TABLE 1.
Characteristics of participants in the REGARDS Study by BMI1
| BMI category (kg/m2) |
|||
| Characteristic | Normal weight (18.5–24.9) | Overweight (25–29.9) | Obese (≥30) |
| No. of subjects | 4979 | 7637 | 7268 |
| Age (y) | 66.1 ± 10.02 | 65.6 ± 9.2 | 63.1 ± 8.4 |
| Black (%) | 21.7 | 29.6 | 44.4 |
| Women (%) | 57.3 | 47.1 | 61.8 |
| Less than high school education (%) | 7.6 | 8.7 | 11.5 |
| Annual income <$20,000 (%) | 13.4 | 13.0 | 18.8 |
| Currently smoking (%) | 17.4 | 12.2 | 11.5 |
| Currently consumes alcohol (%) | 45.3 | 42.9 | 32.7 |
| Fair/poor self-reported health status (%) | 11.2 | 11.7 | 22.3 |
| Sedentary (%)3 | 28.0 | 28.0 | 38.0 |
| Dyslipidemia (%) | 46.3 | 61.4 | 64.1 |
| Hypertension (%) | 42.9 | 53.8 | 69.2 |
| Diabetes mellitus (%) | 7.4 | 14.7 | 29.1 |
| SBP (mm Hg) | 123 ± 17.3 | 127 ± 15.7 | 130 ± 15.8 |
| DBP (mm Hg) | 73.5 ± 10.5 | 75.9 ± 9.2 | 78.4 ± 9.6 |
| eGFR (mL · min−1 · 1.73 m−2) | 84.3 ± 17.9 | 84.1 ± 18.5 | 86.5 ± 20.3 |
| Ratio of urinary albumin to creatinine (mg/g)4 | 7.1 (4.7, 13.5)5 | 6.8 (4.4, 13.1) | 7.5 (4.7, 17.0) |
| Dietary intake (mg/d) | |||
| Sodium | 1996 (1492, 2687) | 2103 (1532, 2787) | 2123 (1536, 2911) |
| Potassium | 2519 (1889, 3275) | 2516 (1894, 3264) | 2444 (1806, 3215) |
| Ratio of sodium to potassium | 0.82 (0.66, 0.99) | 0.85 (0.69, 1.03) | 0.90 (0.72, 1.09) |
| Total energy (kcal) | 1559 (1193, 2012) | 1592 (1206, 2081) | 1594 (1186, 2136) |
1
DBP, diastolic blood pressure; eGFR, estimated glomerular filtration rate; REGARDS, Reasons for Geographic and Racial Differences in Stroke; SBP, systolic blood pressure.
2
Mean ± SD (all such values).
3
Defined as no self-reported weekly physical activity.
4
Albuminuria is defined as a urinary albumin to creatinine ratio ≥30 mg/g.
5
Median; 25th–75th percentile in parentheses (all such values).