Table 3.
Responder analysis. Values are count (%) unless otherwise specified
| Factor | Group 1 | Group 2 | Group 3 | Group 4 | ||
|---|---|---|---|---|---|---|
| Total number | 218 (41) | 119 (23) | 177 (33) | 14 (3) | ||
| Age | ≤ 75 years | 142 (65) | 90 (76) | 121 (68) | 10 (71) | 0.3a |
| > 75 years | 76 (35) | 29 (24) | 56 (32) | 4 (29) | ||
| BMI | < 25 | 26 (12) | 16 (13) | 42 (24) | 1 (7) | 0.02b |
| 25–30 | 101 (46) | 55 (46) | 71 (40) | 3 (21) | ||
| > 30 | 91 (42) | 48 (40) | 64 (36) | 10 (71) | ||
| Smoking | Yes | 21 (10) | 11 (9) | 19 (11) | 1 (7) | 1.0a |
| No | 197 (90) | 108 (91) | 158 (89) | 13 (93) | ||
| ASA | I–II | 197 (90) | 102 (86) | 155 (88) | 11 (79) | 0.4b |
| III–IV | 21 (10) | 17 (14) | 22 (12) | 3 (21) | ||
| Preoperative EQ-5D | ||||||
| Mobility | ||||||
| No problems | 8 (4) | 2 (2) | 18 (10) | 0 (0) | 0.004b | |
| Some problems in walking or confined to bed | 210 (96) | 117 (98) | 159 (90) | 14 (100) | ||
| Self-care | ||||||
| No problems | 165 (76) | 101 (84) | 151 (85) | 7 (50) | 0.001b | |
| Some problems or unable to wash or dress | 53 (24) | 18 (15) | 26 (15) | 7 (50) | ||
| Usual activities | ||||||
| No problems | 32 (15) | 18 (15) | 50 (28) | 0 (0) | 0.001b | |
| Some problems or unable to perform usual activities | 186 (85) | 101 (85) | 127 (72) | 14 (100) | ||
| Pain/discomfort | ||||||
| No pain or discomfort | 16 (7) | 10 (8) | 25 (14) | 1 (7) | 0.1b | |
| Moderate or extreme pain or discomfort | 202 (93) | 109 (92) | 152 (86) | 13 (93) | ||
| Anxiety/depression | ||||||
| Not anxious or depressed | 173 (79) | 91 (76) | 137 (77) | 4 (29) | < 0.001b | |
| Moderate or extremely anxious or depressed | 45 (21) | 28 (24) | 40 (23) | 10 (71) | ||
| VAS health, median | 70 | 74 | 73 | 67 | 0.3c | |
| IQR | 60–81 | 60–82 | 60–82 | 50–79 | ||
| range | 11–100 | 25–100 | 13–100 | 3–100 | ||
Group 1: responders at 6 weeks, responders at 3 months.
Group 2: non-responders at 6 weeks, responders at 3 months.
Group 3: non-responders at 6 weeks, non-responders at 3 months.
Group 4: responders at 6 weeks, non-responders at 3 months.
a
Chi-square
b
Kruskall–Wallis
c
ANOVA