Psychometric Properties of a Smartphone Application for Measuring Shoulder Active Range of Motion in Individuals with and without Shoulder Pain and Mobility Deficits [Response to the Letter]
Aafreen Aafreen, Abdur Raheem Khan, Ausaf Ahmad, Yousef M Alshehre, Mohammed M Alshehri, Mohammad Abu Shaphe, Monira I Aldhahi · 2026
Read Psychometric Properties of a Smartphone Application for Measuring Shoulder Active Range of Motion in Individuals with and without Shoulder Pain and Mobility Deficits [Response to the Letter] by Aafreen Aafreen, Abdur Raheem Khan, Ausaf Ahmad, Yousef M Alshehre, Mohammed M Alshehri, Mohammad Abu Shaphe, Monira I Aldhahi (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/pmc-13148257.txt.
Description
Aafreen and co-authors reply to a letter on their study of a phone app that measures shoulder movement. Their 2026 response deals with people with and without shoulder pain. The app was compared with a standard angle tool. Critics had raised method points. The authors welcome the chance to clarify their choices, and take up each point in turn.
For reliability, they used a model that treats raters as a sample of the wider clinical workforce. A single rater form was chosen because a patient is usually seen by one therapist. For validity, they stress that they did not rely on correlation alone. A plot method that checks agreement and bias was their main tool. Experts warn that correlation can mislead in such studies, they note.
Catalog record
| CREATOR | Aafreen Aafreen, Abdur Raheem Khan, Ausaf Ahmad, Yousef M Alshehre, Mohammed M Alshehri, Mohammad Abu Shaphe, Monira I Aldhahi |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 3 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |