Hip Disability and Osteoarthritis Outcome Score-Physical function Short form Clinical Workflow
Introduction
The Hip disability and Osteoarthritis Outcome Score (HOOS) – Physical Function Shortform (HOOS-PS)-Control was developed from the original long version using Rasch analysis. The Rasch analysis resulted in a 5 item questionnaire that is cross culturally valid and that provides a true interval level measure such that it can be used to measure change in physical function. The reliability of the 5 items is 0.80 (Cronbach’s alpha). It is a unidimensional construct as demonstrated by the fit to the Rasch model [1].
The Hip Disability and Osteoarthritis Outcome Score-Physical function Short form flow contains the Hip disability and Osteoarthritis Outcome Score-Physical function Short form (HOOS-PS) questionnaire and associated calculation. after form submission, the Hip Disability and Osteoarthritis Outcome Score-Physical function Short form calculation is executed automatically. It's easy to extend this flow with conditional logic based on the interpretation of the Hip Disability and Osteoarthritis Outcome Score-Physical function Short form calculation.
Hip disability and Osteoarthritis Outcome Score-Physical function Short form (HOOS-PS) questionnaire
Questions and Scoring
All five items are coded from 0 to 4, none to extreme respectively.
Questions:
- Descending stairs
- Getting in/out of bath or shower
- Sitting
- Running
- Twisting/pivoting on your loaded leg
Interpretation
HOOS-PS can be scored in two directions:
- From no difficulty (0) to extreme difficulty (100), as in the original HOOS-PS publication [2]
- From extreme difficulty (0) to no difficulty (100) in accordance with HOOS.
The method of interpretation used in Awell is according to direction #2 (0 = extreme difficulty and 100 = no difficulty).
Nomogram for converting raw summed HOOS-PS scores to 0 representing extreme difficulty and 100 representing no difficulty:
References
[1] HOOS-PS User’s Guide. http://www.koos.nu/hoospsusers.html \
[2] Davis AM et al. 2008, Osteoarthritis Cartilage
