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|  Prof. Dr. Hakkı Çağdaş BASAT Kırşehir Ahi Evran Üniversitesi, Türkiye | 
|  Arş. Gör. Fatih ÖZYURT Kırşehir Ahi Evran Üniversitesi, Türkiye | 
|  Dr. Öğr. Üyesi Muhammed İhsan KODAK Kırşehir Ahi Evran Üniversitesi, Türkiye | 
|  Gülşah Özsoy Türkiye | 
|  Doç. Dr. Caner KARARTI Kırşehir Ahi Evran Üniversitesi, Türkiye | 
| Özet | 
| Background/aim: Considering that there is no specifically designed scale to measure quality of life (QoL) and level of functioning among Turkish-speaking patients with thoracic outlet syndrome (TOS), the aim of this study was to adapt the Thoracic Outlet Syndrome Index (TOSI) to the Turkish language (TOSI-TR) and analyze its psychometric properties in patients with TOS. Materials and methods: Thirty-nine patients with symptomatic TOS were included in the study. The participants were assessed using the following measures: the QuickDASH, the Western Ontario Rotator Cuff Index (WORC), and a visual analog scale (VAS). The psychometric properties of the TOSI-TR were examined in terms of test-retest reliability, construct validity, convergent validity, and feasibility. Results: The ICC2,1 of the TOSI-TR was 0.949 (95% CI: 0.903-0.973). The Kaiser-Meyer-Olkin value was found to be 0.716 with a significant result for Bartlett's sphericity test (p< 0.001). The TOSI-TR had a one-factor solution explaining 74.05% of the total variance. There was a significant correlation between TOSI-TR scores and QuickDASH (r=0.762, p<0.001), WORC (r =0.794, p<0.001), and VAS (r=0.663, p<0.001) scores. The WORC and VAS scores were significant determinants of the TOSI-TR score, explaining 65.3% of the variance. There were no floor or ceiling effects. Conclusion: The TOSI-TR is a reliable, valid, and feasible questionnaire for the QoL and functional status in Turkish-speaking patients with TOS. We recommend this 15-item scale for optimal assessment in patients with TOS. | 
| Anahtar Kelimeler | 
| Thoracic outlet syndrome index | scale | cross-cultural adaptation | 
| Makale Türü | Özgün Makale | 
| Makale Alt Türü | SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale | 
| Dergi Adı | TURKISH JOURNAL OF MEDICAL SCIENCES | 
| Dergi ISSN | 1300-0144 Wos Dergi Scopus Dergi | 
| Dergi Tarandığı Indeksler | SCI-Expanded | 
| Dergi Grubu | Q3 | 
| Makale Dili | Türkçe | 
| Basım Tarihi | 01-2024 | 
| Cilt No | 54 | 
| Sayı | 3 | 
| Doi Numarası | 10.55730/1300-0144.5824 | 
| Makale Linki | http://dx.doi.org/10.55730/1300-0144.5824 |