Table 5.
Baseline characteristics of participants according to tertiles of variation* in trabecular BMD.
| Tertiles of variation in trabecular BMD | ||||
|---|---|---|---|---|
| I | II | III | P | |
| Mean (SD) | Mean (SD) | Mean (SD) | ||
| Age | 72.8 (5.78) | 70.8 (5.52) | 71.5 (5.89) | 0.054 |
| Years since menopause | 23.7 (8.34) | 22.1 (7.23) | 21.5 (8.75) | 0.170 |
| BMI | 27.5 (4.90) | 28.0 (4.09) | 27.9 (4.34) | 0.706 |
| Cigarette smoking (pack-years) | 2.55 (9.12) | 2.93 (9.95) | 2.77 (7.59) | 0.956 |
| Calories/Kg ideal weight | 33.9 (8.79) | 35.0 (9.91) | 33.6 (8.90) | 0.534 |
| Dietary Fibre (g/day) | 18.2 (5.35) | 19.5 (6.39) | 19.2 (5.24) | 0.255 |
| Calories from carbohydrates/ideal weight |
17.6 (5.13) | 18.1 (5.95) | 17.2 (5.15) | 0.500 |
| Calories from lipids/ideal weight | 11.0 (3.43) | 11.3 (3.58) | 10.8 (3.34) | 0.617 |
| Proteins (g)/ideal weight | 1.36 (0.38) | 1.42 (0.37) | 1.35 (0.36) | 0.335 |
| Animal proteins (g)/ideal weight | 0.88 (0.29) | 0.91 (0.27) | 0.87 (0.27) | 0.482 |
| Vegetal proteins (g)/ideal weight | 0.48 (0.16) | 0.50 (0.16) | 0.48 (0.15) | 0.5304 |
| Non protein calories/g of nitrogen | 132.3 (19.76) | 130.2 (20.88) | 131.3 (20.00) | 0.769 |
| Calcium (mg/day) | 785.5 (338.12) | 843.6 (297.76) | 830.5 (367.29) | 0.453 |
| Phosphorous (mg/day) | 1101.8 (331.51) | 1170.9 (318.25) | 1144.4 (345.29) | 0.347 |
| Vitamin D (mcg/day) | 1.65 (0.66) | 1.96 (1.33) | 1.74 (0.70) | 0.058 |
| Magnesium (mg/day) | 224.2 (67.05) | 238.4 (64.44) | 237.1 (68.85) | 0.266 |
| Folic Acid (mcg/day) | 237.17 (77.46) | 265.36 (80.67) | 256.23 (75.36) | 0.038 |
| Total Polyunsaturated Fatty Acids (g/day) |
6.79 (1.96) | 7.13 (2.68) | 7.06 (2.34) | 0.558 |
| PRAL | 3.42 (10.74) | 0.85 (10.44) | 0.13 (10.85) | 0.079 |
| PRAL/ideal weight | 0.07 (0.21) | 0.02 (0.20) | 0.00 (0.21) | 0.057 |
| Alcohol (g/day) | 6.24 (8.13) | 7.20 (11.11) | 8.70 (10.79) | 0.231 |
| Creatinine clearance (mL/min) | 75.8 (22.44) | 76.7 (20.07) | 72.1 (20.11) | 0.267 |
| 25-hydroxyvitamin D (nmol/L) | 43.5 (25.21) | 48.1 (39.26) | 53.2 (44.41) | 0.207 |
| Interleukin-6 (pg/mL) | 1.47 (1.43) | 1.40 (1.26) | 1.77 (1.79) | 0.193 |
| % | % | % | ||
| Low physical activity | 77.1 | 81.4 | 82.0 | 0.642 |
| Hormone replacement therapy | 10.4 | 9.3 | 7.0 | 0.132 |
*
Calculated as follow-up BMD minus baseline BMD, lower tertile indicates greater BMD loss.