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Table 2 Preoperative factors associated with satisfaction six months post surgery

From: Functional capacity and actual daily activity do not contribute to patient satisfaction after total knee arthroplasty

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
  1. Values are presented as median (minimum; maximum), unless otherwise indicated
  2. *Less satisfied = patients who were moderately satisfied, neutral, moderately dissatisfied or very dissatisfied.
  3. OR; Odds Ratio, CI; Confidence Interval, 6-MWT; six-minutes walk test
  4. Significant results are highlighted in bold.