|  |  |  | Incident fracture |  |  |
---|---|---|---|---|---|---|
 |  |  | No |  | Yes |  |
 |  |  | n = 12,303 |  | n = 6023 |  |
 | na |  | median (Q2-Q4b) |  | median (Q2-Q4b) | p-value |
Age at baseline | 18,323 | (years) | 55.2. (49.5–62.4) |  | 60.0 (52.0–65.5) | < 0.001 |
Body mass index (BMI) | 18,293 | (kg/m2) | 24.8 (22.5–27.9) |  | 24.7 (22.5–27.6) | 0.004 |
Weight | 18,293 | (kg) | 67.0 (60.0–75.0) |  | 66.0 (60.0–74.0) | 0.005 |
Height | 18,294 | (cm) | 163.0 (159.0–168.0) |  | 164.0 (159.0–168.0) | 0.586 |
Weight at 20 years of age | 15,143 | (kg) | 55.0 (50.0–60.0) |  | 55.0 (50.0–60.0) | 0.152 |
Waist-hip-ratio | 18,285 | (ratio) | 0.79 (0.76–0.83) |  | 0.79 (0.76–0.83) | 0.158 |
Alcohol | 17,100 | (g/day) | 5.6 (0.8–11.7) |  | 4.8 (0.6–11.0) | < 0.001 |
Physical activity score | 17,205 |  | 6720.0 (4000.0–10,365.0) |  | 6730.0 (3877.0–10,575.0) | 0.754 |
 |  |  | n (%) |  | n (%) |  |
Current smokers | 17,319 | (yes) | 3336 (28.7) | Â | 1526 (26.8) | 0.008 |
Previous fracture | 18,326 | (yes) | 299 (2.4) |  | 277 (4.6) | < 0.001 |
Family history of fracture | 18,326 | (yes) | 2199 (17.9) |  | 1392 (23.1) | < 0.001 |
Living alone | 17,315 | (yes) | 3149 (27.1) |  | 1750 (30.7) | < 0.001 |
Heavy work | 16,873 | (yes) | 1455 (12.8) | Â | 732 (13.2) | 0.469 |
Highest level of education | 17,278 |  |  |  |  | < 0.001 |
 Completed elementary school |  | (no) | 96 (0.8) |  | 50 (0.8) |  |
 Elementary and junior school (6–10 years) |  | (yes) | 7814 (67.4) |  | 4068 (71.5) |  |
 Advanced level and university (> 11 years) |  | (yes) | 3677 (31.7) |  | 1573 (27.6) |  |
Self-reported weight change since 20 years of age | 17,288 |  |  |  |  | < 0.001 |
 It has been the same |  | (yes) | 1452 (12.5) |  | 744 (13.1) |  |
 Gradually increased |  | (yes) | 6787 (58.5) |  | 3216 (69.5) |  |
 Gradually decreased |  | (yes) | 280 (2.4) |  | 210 (3.7) |  |
 My weight has varied |  | (yes) | 3075 (26.5) |  | 1524 (26.8) |  |
 |  |  | median (Q2-Q4b) |  | median (Q2-Q4b) |  |
Weight changes in kilograms for groups of self-reported weight change since 20 years of age | 12,150 |  |  |  |  | 0.001 |
 It has been the same | 1641 | (kg) | 3.0 (1.0–7.0) |  | 3.0 (0.0–6.0) |  |
 Gradually increased | 7116 | (kg) | 14.0 (9.0–20.0) |  | 14.0 (9.0–20.0) |  |
 Gradually decreased | 358 | (kg) | −4.0 (−8.0- -0.5) |  | −5.0 (−8.0- -2.0) |  |
 My weight has varied | 3035 | (kg) | 9.0 (4.0–15.0) |  | 9.0 (4.0–15.0) |  |
Overall weight change since 20 years of age | 12,163 | (kg) | 11.0 (6.0–18.0) |  | 11.0 (5.0–17.0) | < 0.001 |