Table 2.
Preoperative factors associated with satisfaction six months post surgery
| Determinants | Very satisfied | Less satisfied* | OR (95% CI) | p-value |
|---|---|---|---|---|
| n = 22 (50%) | n = 22 (50%) | |||
| Physical capacity | ||||
| 6-MWT (m) | 295 (59; 499) | 278 (48; 523) | 0.999 (0.994; 1.005) | 0.844 |
| Stair climbing (s) | 11.4 (6; 28) | 11.4 (5; 29) | 1.000 (0.906; 1.103) | 1.000 |
| Rising from chair (s) | 18.9 (9; 36) | 16.7 (10; 34) | 1.047 (0.956; 1.147) | 0.317 |
| Actual daily activity | ||||
| Movement-related activity, % | 7.6 (3.8; 17.5) | 7.3 (2.7; 17.3) | 1.008 (0.861; 1.180) | 0.921 |
| of 24 h | ||||
| Upright, % of 24 h | 17.0 (7.3; 37.2) | 21.3 (6.2; 32.7) | 0.984 (0.912; 1.062) | 0.675 |
| Patient characteristics | ||||
| Gender, % women (n) | 63.6 (14) | 45.5 (10) | 2.100 (0.628; 7.027) | 0.229 |
| Age at baseline, years | 57.0 (42; 78) | 65.5 (48; 77) | 0.957 (0.898; 1.019) | 0.169 |
| BMI at baseline, kg/m2 | 30.8 (24; 41) | 30.4 (24; 45) | 0.962 (0.857; 1.079) | 0.567 |
| Expectations | ||||
| Pain, high expectations, % | 9.1 (2) | 10.5 (2) | 1.176 (0.149; 9.266) | 0.877 |
| (number) | ||||
| Limitations, high expectations, | 27.3 (6) | 18.2 (4) | 0.593 (0.141; 2.484) | 0.593 |
| % (number) | ||||
| Overall success, high | 45.5 (10) | 45.5 (10) | 1.000 (0.305; 3.277) | 1.000 |
| expectations, % (number) | ||||
| Joint function and structure | ||||
| Strength quadriceps, Newton | 145.5 (17; 273) | 175 (53; 299) | 0.993 (0.983; 1.002) | 0.134 |
| Stiffness (WOMAC stiffness) | 30 (0; 80) | 30 (0; 80) | 0.999 (0.968; 1.030) | 0.936 |
| Pain (WOMAC pain) | 36 (8; 60) | 32 (4; 72) | 1.009 (0.966; 1.054) | 0.680 |
| Self-reported physical | ||||
| functioning | ||||
| WOMAC Physical functioning | 35.3 (9.4; 62.4) | 34.1 (9.4; 63.5) | 1.009 (0.964; 1.056) | 0.693 |
| SF-36 Physical functioning | 32.5 (0; 65) | 32.5 (5; 80) | 0.997 (0.968; 1.027) | 0.827 |
| Self-reported mental | ||||
| functioning | ||||
| SF-36 Mental Health | 80 (40; 100) | 60 (32; 96) | 1.045 (1.007; 1.085) | 0.019 |
| HADS anxiety, % case (n) | 18.2 (4) | 50 (11) | 0.222 (0.057; 0.873) | 0.031 |
| HADS depression, % case (n) | 13.6 (3) | 45.5 (10) | 0.189 (0.043; 0.831) | 0.027 |
Values are presented as median (minimum; maximum), unless otherwise indicated
*Less satisfied = patients who were moderately satisfied, neutral, moderately dissatisfied or very dissatisfied.
OR; Odds Ratio, CI; Confidence Interval, 6-MWT; six-minutes walk test
Significant results are highlighted in bold.