Table 1.
Basic Characteristics of the Study Subjects
| Trait | Sample 1 |
Sample 2 |
Sample 3 | Sample 4 | Sample 5 | ||
|---|---|---|---|---|---|---|---|
| Case | Control | Case | Control | ||||
| Number | 350 | 350 | 399 | 400 | 689 | 1000 | 236 |
| Age (yr) | 69.35 (7.41) | 69.54 (6.09) | 67.32 (10.3) | 67.14 (8.34) | 52.45 (16.50) | 50.23 (18.24) | 23.56 (1.83) |
| Weight (kg) | 59.15 (12.05) | 59.61 (10.84) | 59.51 (9.23) | 61.11 (9.81) | 62.74 (12.10) | 80.16 (17.79) | 66.00 (9.54) |
| Height (cm) | 162.84 (8.31) | 159.41 (9.20) | 160.48(7.62) | 159.37 (7.41) | 161.90 (10.74) | 170.83 (9.74) | 172.06 (6.15) |
| Male/Female | 124/226 | 173/177 | 106/293 | 105/295 | 263/426 | 501/499 | 236/0 |
| Hip BMD | – | – | – | – | 0.878 (0.145) | 0.971 (0.154) | – |
| CT | – | – | – | – | 0.142 (0.029) | 0.156 (0.028) | – |
| BR | – | – | – | – | 12.24(2.81) | 12.09(2.35) | – |
Data are shown as mean (standard deviation). Abbreviations are as follows: BMD, bone-mineral density; CT, cortical thickness; BR, buckling ratio. Sample 1 corresponds to the Chinese GWA sample, Sample 2: to the Chinese replication sample, Sample 3 to the Chinese unrelated sample, Sample 4 to the white unrelated sample, and Sample 5 to the Chinese young male sample.