Table 1.
Characteristics of participants in each arm.
| Routine Care | Decision Aid | |
|---|---|---|
| N = 82 | N = 81 | |
| Age, mean (SD) | 64.95 (7.54) | 64.17 (8.34) |
| Females, number (%) | 38 (46.3) | 52 (64.2) |
| Body mass index, mean (SD) | 31.96 (5.32) | 32.20 (5.16) |
| WOMACa, mean (SD) | 57.77 (16.18) | 54.24 (15.82) |
| PHQ-9 Ϯ, mean (SD) | 10.46 (3.39) | 10.96 (2.93) |
| EQ-5D-5L - Utility, mean (SD) | 0.47 (0.26) | 0.48 (0.23) |
| EQ-5D -5L (Mobility), number (%) | ||
| No problems | 1 (1.2) | 3 (3.7) |
| Slight problems | 8 (9.8) | 12 (14.8) |
| Moderate problems | 38 (46.3) | 32 (39.5) |
| Severe problems | 34 (41.5) | 34 (42.0) |
| Extreme problems | 1 (1.2) | 0 (0.0) |
| EQ-5D-5L (Self-care), number (%) | ||
| No problems | 34 (41.5) | 34 (42.0) |
| Slight problems | 19 (23.2) | 27 (33.3) |
| Moderate problems | 23 (28.0) | 17 (21.0) |
| Severe problems | 6 (7.3) | 3 (3.7) |
| Extreme problems | 0 (0.0) | 0 (0.0) |
| EQ-5D-5L (Usual activities), number (%) | ||
| No problems | 1 (1.2) | 2 (2.5) |
| Slight problems | 9 (11.0) | 13 (16.0) |
| Moderate problems | 37 (45.1) | 32 (39.5) |
| Severe problems | 28 (34.1) | 31 (38.3) |
| Extreme problems | 7 (8.5) | 3 (3.7) |
| EQ-5D-5L (Pain/discomfort), number (%) | ||
| No problems | 0 (0.0) | 0 (0.0) |
| Slight problems | 7 (8.5) | 7 (8.6) |
| Moderate problems | 33 (40.2) | 31 (38.3) |
| Severe problems | 30 (36.6) | 35 (43.2) |
| Extreme problems | 12 (14.6) | 8 (9.9) |
| EQ-5D-5L (Anxiety/depression), number (%) | ||
| No problems | 34 (41.5) | 24 (29.6) |
| Slight problems | 14 (17.1) | 23 (28.4) |
| Moderate problems | 24 (29.3) | 26 (32.1) |
| Severe problems | 8 (9.8) | 6 (7.4) |
| Extreme problems | 2 (2.4) | 2 (2.5) |
| Control Preference Scale, n (%) | ||
| I prefer to make the final treatment decision. | 6 (7.4) | 3 (3.8) |
| I prefer to make the final treatment decision after seriously considering my doctor's opinion. | 32 (39.5) | 34 (43.6) |
| I prefer that my doctor and I share responsibility for deciding which treatment is best. | 35 (43.2) | 36 (46.2) |
| I prefer that my doctor makes the final decision about which treatment, but seriously considers my opinion. | 5 (6.2) | 5 (6.4) |
| I prefer to leave all treatment decisions to my doctor. | 3 (3.7) | 0 (0.0) |
WOMAC (Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC).
PHQ-9 (Patient Health Questionnaire).
EQ-5D 5 L (EuroQol-5D 5-level instrument).
a
Range 0–96. Higher = more symptoms; Ϯ Range: 0–27, Higher = more symptoms (depression).