From: Decision quality instrument for treatment of hip and knee osteoarthritis: a psychometric evaluation
 | Study 1 | Study 2 | |
---|---|---|---|
Characteristic | Patients N = 382 | Control group N = 66 | Decision aid group N = 61 |
Gender: Male (%) | 169 (44) | 27 (40.9) | 25 (40.9) |
Age mean (SD) | 62.7 (9.6) | 66.1 (9.49) | 64.3(10.16) |
Race/ethnicity (%) | Â | Â | Â |
White | 359 (95.5) | N/A | N/A |
Education (%) | Â | Â | Â |
≥ College graduate | 209 (56) | 40 (60.6) | 39 (63.9) |
Some college | 94 (25.2) | N/A | N/A |
High school or less | 68 (18.1) | 26 (39.4) | 22 (36.1) |
Missing | 9 (2.4) | 0 | 0 |
Income (%) | Â | Â | Â |
<$30,000 | 78 (20.5) | 5 (7.6)* | 7 (11.5)* |
$30,000-60,000 | 70 (18.3) | 21 (31.8)** | 18 (29.5)** |
$60,000-100,000 | 89 (23.3) | 13 (19.7) | 21 (34.4) |
Over $100,000 | 93 (24.3) | 22 (33.3) | 12 (19.7) |
Missing | 52 (13.6) | 5 (7.6) | 3 (4.9) |
Married/Committed relationship (%) | 255 (67.8) | 42 (63.6) | 38 (62.3) |
Months since decision (median, IQR) | 11 (7, 15) | Considering decision | Considering decision |
Had (or preferred) Surgery (%) | 235 (61) Had surgery | 49 (74.2) Preferred surgery | 39 (63.9) Preferred surgery |
Joint: Knee (%) | 201 (53) | 61 (94) | 59 (97) |
WOMAC Pain Score mean (SD) | 5.6 (4.6) | 10.7 (4.2) | 11.2 (4.0) |