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Foot Ankle Surg. 2019 Feb 1. pii: S1268-7731(18)30464-8. doi: 10.1016/j.fas.2019.01.009. [Epub ahead of print]

Assessment of the structural validity of three foot and ankle specific patient-reported outcome measures.

Author information

1
Department of Surgery, Central Finland Central Hospital, Jyväskylä, Finland. Electronic address: ponkilainen.ville.t@student.uta.fi.
2
Department of Plastic Surgery, Central Hospital of Helsinki University, HUS, Helsinki, Finland.
3
Department of Surgery, Central Finland Central Hospital, Jyväskylä, Finland.
4
Health Sciences, Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland; Department of Physical Medicine, Central Finland Health Care District, Jyväskylä, Finland.

Abstract

BACKGROUND:

The structural validity of the Lower extremity functional scale (LEFS), the Visual analogue scale foot and ankle (VAS-FA), and the Western Ontario and McMaster Universities osteoarthritis index (WOMAC) has not been compared earlier in patients after foot and ankle surgery.

METHODS:

Altogether 165 previously operated patients completed the foot and ankle specific instruments, the 15D health-related quality of life (HRQoL) instrument, and general health (VAS).

RESULTS:

The LEFS, the VAS-FA and the WOMAC had slight differences in their measurement properties. The VAS-FA had the best targeting and coverage. All three foot and ankle measures accounted for mobility and usual activities when compared to the different aspects of generic HRQoL.

CONCLUSIONS:

The LEFS, the VAS-FA and the WOMAC have relatively similar psychometric properties among foot and ankle patients, yet the VAS-FA provides the best targeting and coverage.

KEYWORDS:

LEFS; Measures; Outcome; PROM; VAS-FA; Validity; WOMAC

PMID:
30797700
DOI:
10.1016/j.fas.2019.01.009

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