Table 1.
Characteristics of the study population
| No fractures (n= 33809) | Fractures (n= 2408) | p value* | |
|---|---|---|---|
|
Mean (sd) | |||
| Age (years) | 56.1(5.5) | 57.1 (5.6) | <.0001 |
| BMI (kg/m2) | 23.2 (3.3) | 23.3 (3.4) | 0.01 |
| Physical activity (METs/day) | 52.7 (36.6) | 53.7 (36.1) | 0.18 |
| Number of children | 2.1 (1.2) | 2.0 (1.3) | 0.03 |
| Alcohol intake (g/day) | 11.0 (14.0) | 11.5 (14.4) | 0.12 |
| Energy (alcohol excluded) (Kcal/day) | 1988.1 (532.2) | 1973.3 (526.5) | 0.19 |
| Total proteins (g/1000Kcal/day) | 45.7 (7.3) | 46.0 (7.6) | 0.09 |
| Animal proteins (g/1000Kcal/day) | 28.4 (8.7) | 28.8 (8.9) | 0.04 |
| Vegetal proteins (g/1000Kcal/day) | 12.2 (3.1) | 12.1 (3.2) | 0.39 |
| Proteins by kg of weight (g/kg/day) | 1.45 (0.43) | 1.44 (0.43) | 0.16 |
| Dietary calcium (mg/1000Kcal/day) | 526.4 (161.3) | 520.7 (155.2) | 0.08 |
| Dietary potassium (mg/1000Kcal/day) | 1916.4 (451.6) | 1922.6 (441.1) | 0.51 |
| RNAE (mEq/day) | 45.46 (16.57) | 45.76 (19.03) | 0.07 |
|
N (%) | |||
| Maternal history of hip fracture | 2928 (8.7) | 240 (10.0) | 0.03 |
| HT use (% ever) | 24072 (71.2) | 1516 (63.0) | <.0001 |
| Current smokers | 4082 (12.0) | 297 (12.3) | 0.71 |
| Calcium supplement users | 7019 (20.8) | 291 (12.1) | <.0001 |
*
Student’s t test for quantitative variables, Chi2 for qualitative variables