Tele-assessment of the Performance Tests in Patients With Knee Osteoarthritis

"The participants were evaluated in two settings on different days (24-48 h apart): (i) in clinical settings (face-to-face) and (ii) at home via 'WhatsApp' phone application (both asynchronized and synchronized tele-assessment).~The evaluations steps were as follows:~1. Face-to-face/ Clinic assessment: Rater 1 completed all clinical assessments.~2. Synchronized tele-assessment: Rater 1 repeated the same evaluations via video calls to the patients (these were recorded to be used in step 3).~3. Asynchronized tele-assessment: Rater 2 evaluated the recordings of the remote evaluations (made in step 2).~4. Retest of synchronized tele-assessment: Rater 1 evaluated patients via video calls (these were recorded to be used in step 5).~5. Retest of asynchronized tele-assessment: Rater 2 evaluated the recordings of the remote evaluations (made in step 4)."