Table 1.
Characteristics of the Study Participants of the Framingham Offspring Cohort at the 1991–1995 or 1995–1998 Baseline Examination
| Descriptive variables | Men (n = 1725) | Women (n = 1931) |
|---|---|---|
| Age (years) | 55.3 ± 9.9a | 54.9 ± 9.8 |
| Weight (kg) | 87 ± 14.3 | 70 ± 14.8 |
| Height (m) | 1.8 ± 0.07 | 1.6 ± 0.06 |
| Body mass index (BMI; kg/m2) | 28.1 ± 4.1 | 26.8 ± 5.5 |
| Physical activity index | 37.5 ± 7.8 | 36.6 ± 6.0 |
| Current smokers (%) | 18.6 | 19.3 |
| Calcium supplement use (%) | 13.0 | 29.2 |
| Postmenopausal women (%) | — | 68.9 |
| Hip fracture (n) | 10 | 34 |
| Intake of | ||
| Total energy (MJ/day) | 8.2 ± 2.6 | 7.3 ± 2.4 |
| Total calcium (mg/day)b | 776 ± 381 | 872 ± 472 |
| Dietary calcium (mg/day) | 751± 366 | 739 ± 358 |
| Total vitamin D (IU/day)b | 294 ± 235 | 318 ± 256 |
| Dietary vitamin D (IU/day) | 204 ± 132a | 197 ± 129 |
| Total protein (g/day) | 79.0 ± 27 | 75.7 ± 27 |
| Animal protein (g/day) | 54.3 ± 22 | 52.5 ± 22 |
| Plant protein (g/day) | 24.6 ± 9 | 23.1 ± 9 |
| Animal/plant protein ratio | 2.4 ± 1 | 2.4 ± 1 |
a
Mean ± SD.
b
Total nutrient intake = dietary intake + supplemental intake.