Table 1. Characteristics of the Nurse’s Health Study population stratified by clinically relevant BMI categories.
Data are reported as mean ± standard deviation or percents (%).
| VARIABLE | BMI<24.9 | BMI 25.0-29.9 | BMI≥30.0 | P |
|---|---|---|---|---|
| N | 584 | 392 | 230 | - |
|
| ||||
| Age (years) | 57.3 ± 6.9 | 57.7 ± 6.5 | 57.0 ± 7.0 | 0.87 |
| Race (% white) | 96.4 | 96.2 | 94.3 | 0.23 |
| BMI (kg/m2) | 22.4 ± 1.7 | 27.1 ± 1.3 | 33.9 ± 3.8 | <0.001 |
| Menopausal status (% yes) | 82.5 | 87.2 | 80.4 | 0.94 |
| 25(OH)D (ng/mL) | 25.9 ± 9.8 | 23.3 ± 9.2 | 22.0 ± 8.4 | <0.001 |
| Adiponectin (μg/mL) | 20.4 ± 7.5 | 16.5 ± 7.1 | 13.9 ± 6.8 | <0.001 |
| Systolic Blood Pressure (mmHg) | 123 ± 14 | 129 ± 14 | 133 ± 14 | <0.001 |
| Diastolic Blood Pressure (mmHg) | 76 ± 8 | 79 ± 8 | 82 ± 8 | <0.001 |
| Dietary Sodium Intake (mg/day) | 1815 ± 335 | 1847 ± 337 | 1886 ± 352 | 0.007 |
| Dietary Potassium Intake (mg/day) | 2935 ± 490 | 2909 ± 502 | 2819 ± 603 | 0.008 |
| Dietary Calcium Intake (mg/day) | 1066 ± 508 | 1044 ± 531 | 918 ± 460 | <0.001 |
| Alcohol intake (grams/day) | 6.5 ± 10.3 | 5.0 ± 8.9 | 3.8 ± 9.0 | <0.001 |
| Prudent dietary score | 0.12 ± 0.97 | 0.13 ± 0.95 | 0.07 ± 0.94 | 0.56 |
| Physical activity (METS/week) | 19.2 ± 26.1 | 15.8 ± 34.7 | 10.9 ± 11.6 | <0.001 |
| Diabetes Status (%yes) | 0.5 | 2.6 | 4.4 | <0.001 |
| Hypertension Status (% yes) | 19.4 | 32.1 | 45.2 | <0.001 |
| Use of Any Anti-Hypertensive Drug (%yes) | 17.8 | 26.5 | 38.7 | <0.001 |