Article

This study validated the Patellofemoral Pain Severity Scale translated
into Chinese. Design and setting: The Chinese Patellofemoral Pain Severity Scale
was translated from the original English version following standard forward and
backward translation procedures recommended by the International Society for
Pharmacoeconomics and Outcomes Research. The survey was then conducted in
clinical settings by a questionnaire comprising the Chinese Patellofemoral Pain
Severity Scale, Kujala Scale and Western Ontario and McMaster Universities
(WOMAC) Osteoarthritis Index. Subjects: Eighty-four Chinese reading patients with
patellofemoral pain were recruited from physical therapy clinics. Main measures:
Internal consistency of the translated instrument was measured by Cronbach alpha.
Convergent validity was examined by Spearman rank correlation coefficient (rho)
tests by comparing its score with the validated Chinese version of the Kujala
Scale and the WOMAC Osteoarthritis Index while the test-retest reliability was
evaluated by administering the questionnaires twice. Results: Cronbach alpha
values of individual questions and their overall value were above 0.85. Strong
association was found between the Chinese Patellofemoral Pain Severity Scale and
the Kujala Scale (rho = -0.72, p < 0.001). Moderate correlation was also found
between Chinese Patellofemoral Pain Severity Scale with the WOMAC Osteoarthritis
Index (rho = 0.63, p < 0.001). Excellent test-retest reliability (Intraclass
correlation coefficient = 0.98) was demonstrated. Conclusions: The Chinese
translated version of the Patellofemoral Pain Severity Scale is a reliable and
valid instrument for patients with patellofemoral pain.

Langue : ANGLAIS