Results of Group Effect on VAS Pain Score & Pain-Free Active Knee Flexion of Individual Treated Knees Using Mixed Linear Regression
| Type of Assessment | Intervention Group (n = 104), mean (SD) | Control Group (n = 104), mean (SD) | Imputed Data Analysis Model 1 | Imputed Data Analysis Model 2 a | ||||
|---|---|---|---|---|---|---|---|---|
| Between-Group Difference (95% CI) | P Value | SE | Between-Group Difference (95% CI) | P Value | SE | |||
| Pain intensity total (VAS) of treated knee | ||||||||
| Week 0 | 62.6 (17.5) | 63.6 (17.4) | ||||||
| Week 24 | 42.1 (24.2) | 57.7 (23.0) | –15.6 (–21.7 to – 9.5) | <.001 | 3.1 | –15.0 (–20.5 to – 9.5) | <.001 | 2.8 |
| Degree of pain-free active knee flexion | ||||||||
| Week 0 | 125.8 (12.4) | 124.1 (17.1) | ||||||
| Week 24 | 130.0 (10.4) | 118.6 (19.5) | 11.0 (6.7 to 15.3) | <.001 | 2.2 | 9.3 (6.0 to 12.5) | <.001 | 1.6 |
SE = standard error; VAS = visual analog scale.
↵a Adjusted for duration of knee pain, number of comorbidities, total amount of analgesic consumption, and age.