Knee Surg Sports Traumatol Arthrosc (2015) 23:591–595 DOI 10.1007/s00167-014-3290-0

SHOULDER

Turkish version of the Rotator Cuff Quality of Life questionnaire in rotator cuff‑impaired patients Özge Çınar‑Medeni · Nuriye Ozengin · Gul Baltaci · Irem Duzgun 

Received: 21 January 2014 / Accepted: 28 August 2014 / Published online: 11 September 2014 © European Society of Sports Traumatology, Knee Surgery, Arthroscopy (ESSKA) 2014

Abstract  Purpose  To date, the “Rotator Cuff Quality of Life” (RCQOL) measure has not been translated into Turkish. The aim of this study was to perform a cross-cultural adaptation of the questionnaire and determine the reliability and reproducibility of the “Turkish version of the RC-QOL” (Tur-RC-QOL) questionnaire on Turkish-speaking patients. Methods  The translation followed an established forward-and-backward translation procedure. Thirty Turkishspeaking, rotator cuff-impaired patients were enrolled in the study. The validity of the Tur-RC-QOL was assessed and compared with the “Shoulder Pain and Disability Index” (SPADI) and the “Western Ontario Rotator Cuff Index” (WORC) using Pearson’s correlation coefficients. A test–retest interval of 2 days was used to assess the reliability. Internal consistency was tested by Cronbach’s alpha, relative reliability with “intraclass correlation coefficient” (ICC), and absolute reliability using the formula for the “standard error of measurement” (SEM).

Results  The Cronbach’s alpha scores were high for the total scores and subheadings of the Tur-RC-QOL, in the range of 0.83–0.98. Excellent test–retest reliability scores were found for the total score and for all parts of the Tur-RC-QOL, with the exception of “Part E”. The ICC score for Part E was relatively lower than other parts (ICC  = 0.71), and the SEM score was relatively higher (17.92 %). The Pearson correlation coefficients for the TurRC-QOL were high for SPADI (r = 0.90, p 0.40, “fair to good”, and  0.05), the validity of RC-QOL was analysed by calculating the Pearson correlation coefficients for SPADI and WORC. The similar subheadings between the RC-QOL and WORC were assessed for validity using Pearson’s correlation coefficient.

Results The forward-and-backward translations of the Tur-RC-QOL presented no major difficulties or problems. The absolute values for each of the questionnaires are given in Table 2. The mean age of the subjects was (mean ± SD) 47.5  ± 13.9 years (range 26–66 years). The cohort comprised 11 male and 19 female subjects. There were no missing data for any Tur-RC-QOL item. Internal consistency and reliability scores were high for all parts of the Tur-RC-QOL, and the total score range was between 0.83 and 0.98. Excellent test–retest reliability scores were seen for the total scores and for all parts of the Tur-RC-QOL, with the exception of Part E. The ICC score for Part E was relatively lower than that for other parts of the questionnaire, and the SEM score was relatively higher (Table 3). Table  4 shows the correlations between the Tur-RCQOL and both the SPADI and the WORC tools. The results were in agreement between the Tur-RC-QOL and the scales for the SPADI and WORC total scores. High correlations were found for the Tur-RC-QOL and the WORC (r = 0.90, p 

Turkish version of the Rotator Cuff Quality of Life questionnaire in rotator cuff-impaired patients.

To date, the "Rotator Cuff Quality of Life" (RC-QOL) measure has not been translated into Turkish. The aim of this study was to perform a cross-cultur...
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