Table 1.
Descriptive statistics of the discrete-choice experiment and composite time trade-off samples
| Characteristics | DCE | cTTO |
|---|---|---|
| Sample size, N | 1074 | 202 |
| Sex | ||
| Female | 529 (49.3%) | 111 (45.1%) |
| Male | 545 (50.7%) | 91 (54.9%) |
| Age group | ||
| 18–29 | 154 (14.3%) | 118 (58.4%) |
| 30–39 | 172 (16.0%) | 30 (14.8%) |
| 40–49 | 194 (18.1%) | 24 (11.9%) |
| 50–59 | 194 (18.1%) | 14 (6.9%) |
| 60–69 | 183 (17.0%) | 13 (6.4%) |
| ≥ 70 | 177 (16.5%) | 3 (1.5%) |
| Mobility | ||
| No problems | 818 (76.2%) | 189 (93.6%) |
| Some problems | 230 (21.4%) | 13 (6.4%) |
| A lot of problems | 26 (2.4%) | 0 (0%) |
| Self-care | ||
| No problems | 1003 (93.4%) | 200 (99.0%) |
| Some problems | 66 (6.2%) | 2 (1.0%) |
| A lot of problems | 5 (0.5%) | 0 (0%) |
| Usual activities | ||
| No problems | 873 (81.3%) | 188 (93.1%) |
| Some problems | 189 (17.6%) | 14 (6.9%) |
| A lot of problems | 12 (1.1%) | 0 (0%) |
| Pain/discomfort | ||
| No problems | 627 (58.4%) | 146 (72.3%) |
| Some problems | 415 (38.6%) | 56 (27.7%) |
| A lot of problems | 32 (3.0%) | 0 (0%) |
| Anxiety/depression | ||
| No problems | 583 (54.3%) | 172 (85.2%) |
| Some problems | 456 (42.5%) | 28 (13.9%) |
| A lot of problems | 35 (3.3%) | 2 (1.0%) |
| Visual analogue scale | ||
| Mean | 79.9 | 83.3 |
| Standard deviation | 15.7 | 12.4 |
| Minimum | 0 | 38 |
| Maximum | 100 | 100 |
| Median | 82 | 85 |