From: Rasch analysis of the brief Michigan Hand Questionnaire in patients with thumb osteoarthritis
Person variable | Coding categories | Number of persons (% of total sample N = 923) |
---|---|---|
Sex | Male | 204 (22%) |
Female | 719 (78%) | |
Age | Under 40 | 8 (1%) |
40 – 49 years | 64 (7%) | |
50 – 59 years | 379 (41%) | |
60 – 69 years | 355 (38%) | |
70 – 79 years | 110 (12%) | |
80 – 89 years | 7 (1%) | |
Dominant hand treated | No | 416 (45%) |
Yes | 409 (44%) | |
Ambidexter, one hand treated | 30 (3%) | |
Ambidexter, both hands treated | 4 (0.4%) | |
Both hands treated, not ambidexter | 64 (7%) | |
Treatment choice | Non-surgical | 579 (63%) |
Surgical | 344 (37%) | |
Pain Catastrophizing Scale (0 – 52) [12] | Less than 15 | 589 (64%) |
15 – 23 | 199 (21.5%) | |
24 – 38 | 121 (13%) | |
39—52 | 14 (1.5%) | |
Illness perception overall score (0 – 80) [13] | 0—10 | 7 (1%) |
11—20 | 37 (4%) | |
21 – 30 | 110 (12%) | |
31 -40 | 280 (30%) | |
41 – 50 | 352 (38%) | |
51 – 60 | 123 (13%) | |
61 – 70 | 14 (2%) | |
71 – 80 | 0 (0%) | |
Type of work | Unemployed | 391 (42%) |
Light physical labor | 194 (21%) | |
Moderate physical labor | 240 (26%) | |
Heavy physical labor | 98 (11%) |