Outcome
Type |
Measure |
Description |
Time frame |
Safety issue |
Primary |
Usual pain severity assessed by the Numeric Rating Scale (NRS ) |
The primary outcome being measure is differences in usual pain severity between groups after the intervention. NRS score was measured from 0 (no pain) to 10 (worst pain imaginable). |
8 weeks |
|
Primary |
Global rating of perceived recovery |
The primary outcome being measure is differences in global rating of perceived recovery between groups after the intervention. Global rating of perceived recovery score was measured from 1 (very bad) to 7 (very good). |
8 weeks |
|
Primary |
Functional disability assessed by the Kujala Patellofemoral Scale |
The primary outcome being measure is differences in functional disability between groups after the intervention. Kujala Patellofemoral Scale, also known as Anterior Knee Pain Scale, is a patient reported assessment of patellofemoral pain syndrome-specific functional limitations. It has 13 questions, and total score ranges from 0 to 100 (higher scores meaning better outcomes). |
8 weeks |
|
Secondary |
Usual pain severity assessed by the Numeric Rating Scale (NRS) |
The secondary outcome being measure is differences in usual pain severity between groups at 4 and 12 weeks. NRS score was measured from 0 (no pain) to 10 (worst pain imaginable). |
4, 12 weeks |
|
Secondary |
Global rating of perceived recovery |
The secondary outcome being measure is differences in global rating of perceived recovery between groups at 4 and 12 weeks. Global rating of perceived recovery score was measured from 1 (very bad) to 7 (very good). |
4, 12 weeks |
|
Secondary |
Functional disability assessed by the Kujala Patellofemoral Scale |
The secondary outcome being measure is differences in functional disability between groups at 4 and 12 weeks. Kujala Patellofemoral Scale, also known as Anterior Knee Pain Scale, is a patient reported assessment of patellofemoral pain syndrome-specific functional limitations. It has 13 questions, and total score ranges from 0 to 100 (higher scores meaning better outcomes). |
4, 12 weeks |
|
Secondary |
Worst pain severity, pain during specific activities (running, standing up from sitting, going up or down stairs, and sleeping) assessed by the Numeric Rating Scale (NRS) |
The secondary outcome being measure is differences in worst pain severity, pain during specific activities between groups at 4, 8 and 12 weeks. NRS score was measured from 0 (no pain) to 10 (worst pain imaginable). |
4, 8, 12 weeks |
|
Secondary |
Health-related quality of life assessed by EuroQol five-dimensional (EQ-5D) |
The secondary outcome being measure is differences in health-related quality of life between groups at 4, 8 and 12 weeks. It measures five dimensions of health: mobility, self-care, usual activities, pain/discomfort, and anxiety/depression, with three possible answers for each dimension (1=no problem, 2=moderate problem, 3=severe problem). The instrument also includes a visual analogue scale, which is numbered from 0 (the worst health you can imagine) to 100 (the best health you can imagine). |
4, 8, 12 weeks |
|
Secondary |
Changes of Knee strength |
Flexion and extension strength of knee are measured using a Biodex isokinetic dynamometer (peak torque (Nm) and % decrease in torque). |
8, 12 weeks |
|
Secondary |
Changes of hip abductor function |
Hip abductor function is assessed by knee valgus angle during single leg squat (°). |
8, 12 weeks |
|
Secondary |
Changes of usual pain severity, worst pain severity, pain during specific activities (running, standing up from sitting, going up or down stairs, and sleeping), assessed by the Numeric Rating Scale (NRS) |
The secondary outcome being measure is differences in changes of usual pain severity, worst pain severity, pain during specific activities from baseline to 4, 8, and 12 weeks between groups. NRS score was measured from 0 (no pain) to 10 (worst pain imaginable). |
4, 8, 12 weeks |
|
Secondary |
Changes of functional disability assessed by the Kujala Patellofemoral Scale |
The secondary outcome being measure is differences in changes of functional disability from baseline to 4, 8, and 12 weeks between groups. Kujala Patellofemoral Scale, also known as Anterior Knee Pain Scale, is a patient reported assessment of patellofemoral pain syndrome-specific functional limitations. It has 13 questions, and total score ranges from 0 to 100 (higher scores meaning better outcomes). |
4, 8, 12 weeks |
|
Secondary |
Changes of health-related quality of life assessed by EuroQol five-dimensional (EQ-5D) [ Time Frame: 4, 8, 12 weeks ] |
The secondary outcome being measure is differences in changes of health-related quality of life from baseline to 4, 8, and 12 weeks between groups. It measures five dimensions of health: mobility, self-care, usual activities, pain/discomfort, and anxiety/depression, with three possible answers for each dimension (1=no problem, 2=moderate problem, 3=severe problem). The instrument also includes a visual analogue scale, which is numbered from 0 (the worst health you can imagine) to 100 (the best health you can imagine). |
4, 8, 12 weeks |
|
Secondary |
Assessment of mental health symptoms specific to depression as assessed by the Patient Health Questionnaire-9 (PHQ-9) |
Differences in mental health symptoms between groups at 8, 12 weeks. The Patient Health Questionnaire-9 (PHQ-9) total score for the nine items ranges from 0 to 27 (higher scores indicating greater severity of depression). |
8, 12 weeks |
|
Secondary |
Assessment of catastrophic thinking measured by Pain Catastrophizing Scale (PCS) |
Differences in levels of catastrophic thinking between groups at 8, 12 weeks. The Pain Catastrophizing Scale (PCS) is a 13-item scale, with a total range of 0 to 52 (higher scores indicating higher amounts of pain catastrophizing). |
8, 12 weeks |
|
Secondary |
Assessment of fear avoidance behaviours measured by Fear-Avoidance Beliefs Questionnaire (FABQ) |
Differences in fear avoidance behaviours between groups at 8, 12 weeks. The Fear-Avoidance Beliefs Questionnaire (FABQ) is a 16-item scale, with a total range of 0 to 96 (higher scores indicating higher amounts of fear avoidance behaviours). |
8, 12 weeks |
|
Secondary |
Use of rescue medication |
Differences in use of rescue medication between groups at 4, 8, 12 weeks. |
4, 8, 12 weeks |
|
Secondary |
Assessment of retention in treatment |
Differences in retention rates between groups at 4, 8 weeks. |
4, 8 weeks |
|