| Characteristic | No. (%)* | p value | |
|---|---|---|---|
| Received repeat DEXA n = 86 213 | Did not receive repeat DEXA n = 308 181 | ||
| Age, mean (95% CI) | 65.2 (65.1-65.3) | 63.6 (63.5-65.6) | < 0.001 |
| Sex | < 0.001 | ||
| Female | 75 582 (22.8) | 256 616 (77.2) | |
| Male | 10 631 (17.1) | 51 485 (82.9) | |
| Neighbourhood income quintile | < 0.001 | ||
| 1 (lowest) | 13 151 (20.4) | 51 304 (79.6) | |
| 2 | 15 774 (21.2) | 58 494 (78.8) | |
| 3 | 16 453 (21.3) | 60 681 (78.7) | |
| 4 | 19 054 (22.4) | 65 832 (77.6) | |
| 5 (highest) | 21 516 (23.4) | 70 464 (76.6) | |
| Rurality | < 0.001 | ||
| Urban | 79 983 (22.5) | 274 745 (77.5) | |
| Rural | 6144 (15.7) | 32 867 (84.3) | |
| Index scan risk level | < 0.001 | ||
| Baseline scan | 6596 (8.7) | 68 860 (91.3) | |
| Low risk scan | 4030 (8.1) | 45 540 (91.9) | |
| High risk scan | 75 587 (28.1) | 193 711 (71.9) | |
Note: CI = confidence interval, DEXA = dual x-ray absorptiometry.
*Unless otherwise indicated.