Table 1 Demography of the included patients and fractures in both the day 0 (pre-injury) and the 1-year follow-up before and after case control matching. One-way Anova was used for statistical analysis of mean age and Pearson’s Chi-square test for distribution
Initial responders | Responders after phone reminder | Eventual non-responders | p-value | ||
Demography crude data | |||||
Day 0 survey | Number | 317 | 94 | 202 | |
Mean age (sd) | 62.2 (19.0) | 56.4 (20.3) | 58.5 (23.5) | 0.026 | |
Female | 214 (68%) | 62 (66%) | 126 (62%) | 0.235 (a) | |
Fracture before (b) | 8 (2.5%) | 3 (3.2%) | 6 (3.0%) | 0.922 | |
Case mix (c) | 48/19/7/6/4/16 | 52/16/13/4/4/11 | 44/22/10/9/4/11 | 0.330 | |
1-Year survey | Number | 268 | 42 | 86 | |
Mean age (sd) | 61.6 (18.0) | 58.8 (19.5) | 56.0 (22.4) | 0.056 | |
Female | 189 (71%) | 27 (64%) | 51 (59%) | 0.048 (a) | |
Open fracture | 8 (3.0%) | 0 (0.0%) | 0 (0.0%) | - (d) | |
Fracture after (e) | 15 (5.6%) | 0 (0.0%) | 1 (1.2%) | 0.071 | |
Case mix (c) | 47/19/9/6/4/16 | 57/17/10/7/2/7 | 56/12/8/5/5/15 | 0.785 | |
Initial responders | Responders after phone reminder | p-value | |||
Demography data after case control matching | |||||
Day 0 survey | Number | 89 | 89 | ||
Mean age (sd) | 57.1 (20.0) | 56.7 (19.7) | 0.889 | ||
Female | 48 (54%) | 59 (66%) | 0.242 | ||
Fracture before (b) | 0 (0.0%) | (0.0%) | - (d) | ||
Case mix (c) | 55/15/12/3/2/11 | 55/15/12/3/2/11 | 1.000 | ||
1-Year survey | Number | 36 | 36 | ||
Mean age (sd) | 56.6 (19.7) | 56.8 (19.8) | 0.957 | ||
Female | 23 (64%) | 27 (64%) | 0.971 | ||
Open fracture | 2 (5.6%) | 0 (0.0%) | - (d) | ||
Fracture after (e) | 8 (22.2%) | 0 (0.0%) | 0.001 | ||
Case mix (c) | 64/19/6/3/3/2 | 64/19/6/3/3/2 | 1.000 | ||