Table 1. Characteristics of participants.
Where appropriate, the average value is given with one standard deviation in parentheses.
| Characteristic | PFP (n=32) | Healthy controls (n=38) | p-values |
|---|---|---|---|
| Number of Females/Males | 24/8 | 28/10 | 1.0^ |
| Age range (years) | 17.2–55.1 | 19.0–54.6 | NA |
| Mean age (years) | 27.4 (9.4) | 28.0 (7.9) | 0.77a |
| Weight (kg) | 65.5 (10.9) | 64.2 (10.6) | 0.59a |
| Height (cm) | 167.8 (9.7) | 168.0 (10.7) | 0.95a |
| BMI (kg/m2) | 23.2 (2.6) | 22.8 (3.8) | 0.67a |
| Static knee angle† (deg) | 8.0 (5.2) | 7.8 (3.7) | 0.92a |
| AKP* score (out of 100) | 72.6 (16.1) | 100 | NA |
| VAS†† pain scores (out of 10) | |||
| Pain during a typical day | 2.9 (2.1) | 0 | NA |
| Pain at the end of the day | 3.5 (2.6) | 0 | NA |
| Pain during a provocative activity | 5.7 (2.3) | 0 | NA |
^
Fishers exact test (Graphpad Software Inc, La Jolla, Ca)
a
Student’s two-tailed t-test (SPSS Ver22, IBM, Armonk, NY)
†
The knee angle was defined as the angle between the anterior border of the tibia and the long axis of the femur
*
Anterior knee pain25
††
Visual analog scale