Table 1.
Characteristics of Swiss chiropractors, study participants, and nonparticipants
| Characteristic | Source population (n = 286) | Participants (n = 217) | Nonparticipants (n = 69) | |||
|---|---|---|---|---|---|---|
| N | % | N | % | N | % | |
| Sex | ||||||
| Female | 93 | 32.5 | 77 | 35.5 | 16 | 23.2 |
| Male | 193 | 67.5 | 140 | 64.5 | 53 | 76.8 |
| Age – mean ± SD (y) | 51.4 ± 11.2 | 50.7 ± 11.2 | 53.9 ± 11.1 | |||
| Age groups (y) | ||||||
| ≤ 29 | 4 | 1.4 | 4 | 1.8 | 0 | 0 |
| 30–39 | 34 | 11.9 | 27 | 12.4 | 7 | 10.1 |
| 40–49 | 85 | 29.7 | 68 | 31.3 | 17 | 24.6 |
| 50–59 | 89 | 31.1 | 71 | 32.7 | 18 | 26.1 |
| 60–69 | 57 | 19.9 | 35 | 16.1 | 22 | 31.9 |
| ≥ 70 | 14 | 4.9 | 10 | 4.6 | 4 | 5.8 |
| NA | 3 | 1.0 | 2 | 0.9 | 1 | 1.4 |
| Language | ||||||
| German | 185 | 64.7 | 140 | 64.5 | 45 | 65.2 |
| French | 89 | 31.1 | 67 | 30.9 | 22 | 31.9 |
| Italian | 12 | 4.2 | 10 | 4.6 | 2 | 2.9 |
| Clinical experience – mean ± SD (y) | 22.5 ± 10.3 | 22.1 ± 10.1 | 23.7 ± 10.8 | |||
| Clinical experience groups (y) | ||||||
| ≤ 10 | 38 | 13.3 | 28 | 12.9 | 10 | 14.5 |
| 11–20 | 85 | 29.7 | 71 | 32.7 | 14 | 20.3 |
| 21–30 | 109 | 38.1 | 79 | 36.4 | 30 | 43.5 |
| 31–40 | 39 | 13.6 | 28 | 12.9 | 11 | 15.9 |
| 41–50 | 12 | 4.2 | 9 | 4.1 | 3 | 4.3 |
| ≥ 50 | 2 | 0.7 | 1 | 0.5 | 1 | 1.4 |
| NA | 1 | 0.3 | 1 | 0.5 | 0 | 0 |
| Practice size – N chiropractors | ||||||
| 1 | NA | NA | 102 | 47.0 | NA | NA |
| 2–3 | NA | NA | 81 | 37.3 | NA | NA |
| ≥ 4 | NA | NA | 34 | 15.7 | NA | NA |