Open AccessValidation of an 18‐item version of the Swedish Knee Self‐Efficacy Scale for patients after ACL injury and ACL reconstruction
Author(s) -
Beischer S.,
Hamrin Senorski E.,
Thomeé P.,
Thomeé R.
Publication year - 2021
Publication title -
journal of experimental orthopaedics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.597
H-Index - 18
ISSN - 2197-1153
DOI - 10.1186/s40634-021-00414-2
Subject(s) - cronbach's alpha , physical therapy , anterior cruciate ligament , reliability (semiconductor) , construct validity , psychology , acl injury , ceiling effect , checklist , anterior cruciate ligament reconstruction , scale (ratio) , clinical psychology , psychometrics , medicine , surgery , power (physics) , physics , alternative medicine , pathology , quantum mechanics , cognitive psychology
Purpose To evaluate the measurement properties of a new version of the Swedish Knee Self‐Efficacy Scale (K‐SES) in samples of individuals with an anterior cruciate ligament (ACL) injury and after ACL reconstruction. A secondary aim was to translate the new version of K‐SES into English in order to prepare for future complete cross‐cultural adaptation. Methods The reliability, structural validity, internal consistency and construct validity of the new, 18‐item version of the K‐SES (K‐SES 18 ) were assessed according to the COnsensus‐based Standards for the selection of health Measurement INstruments (COSMIN) checklist for evaluating methodological quality. The Swedish version of the K‐SES 18 was translated to English using recommended guidelines. Results The test‐retest reliability for the K‐SES 18 subscale present and the K‐SES 18 subscale future showed an Interclass Correlation Coefficient (ICC) = 0.92. In addition, the K‐SES 18 had a Cronbach’s α ranging from 0.93 to 0.96 for the K‐SES 18 subscale present and from 0.81 to 0.91 for the K‐SES 18 subscale future . No floor and ceiling effects were identified for the subscale present or the subscale future of the K‐SES 18 . A factor analysis produced 2 factors of importance; K‐SES 18 present and K‐SES 18 future . Seven predefined hypotheses were confirmed. Conclusion The K‐SES 18 has acceptable reliability and validity to assess knee self‐efficacy in patients up to 18 months after ACL injury and reconstruction. Level of evidence IV.