en <span style=font-size:12pt><span style=line-height:normal><span style=font-family:Aptos,sans-serif><b><span lang=EN-GB style=font-size:10.0pt><span cambria= style=font-family:><span style=color:#4f81bd>Aims</span></span></span></b><b><span lang=EN-GB style=font-size:10.0pt><span cambria= style=font-family:><span style=color:#4f81bd>:</span></span></span></b><span lang=EN-GB style=font-size:10.0pt><span cambria= style=font-family:><span style=color:black> T<span class=A4 minion= pro= style=font-family:><span style=color:black><span cambria= style=font-family:><span style=color:black>his study aimed to investigate the </span></span></span></span>psychometric properties of the </span></span></span><span lang=EN-GB style=font-size:10.0pt><span cambria= style=font-family:><span style=color:black>Multiple Sclerosis International Quality of Life </span></span></span><span lang=EN-GB style=font-size:10.0pt><span cambria= style=font-family:><span style=color:black>(MusiQoL) q</span></span></span><span lang=EN-GB style=font-size:10.0pt><span cambria= style=font-family:><span style=color:black>uestionnaire </span></span></span><span lang=EN-GB style=font-size:10.0pt><span cambria= style=font-family:><span style=color:black>for Croatian-speaking MS patients</span></span></span><span lang=EN-GB style=font-size:10.0pt><span cambria= style=font-family:><span style=color:black>.</span></span></span></span></span></span><br> <span style=font-size:12pt><span style=line-height:normal><span style=font-family:Aptos,sans-serif><b><span lang=EN-GB style=font-size:10.0pt><span cambria= style=font-family:><span style=color:#4f81bd>Instrument & Methods</span></span></span></b><b><span lang=EN-GB style=font-size:10.0pt><span cambria= style=font-family:><span style=color:#4f81bd>:</span></span></span></b><span lang=EN-GB style=font-size:10.0pt><span cambria= style=font-family:><span style=color:black> This descriptive study was conducted in 2024 at Clinical Hospital Centre in Osijek, Croatia. Eighty-two patients with multiple sclerosis (MS) participated in the study (51 female and 31 male, mean age 42.6±11.9 years). The instrument used in this study was the MusiQoL questionnaire, which was translated into Croatian language using</span></span></span><span lang=EN-GB style=font-size:10.0pt><span cambria= style=font-family:><span style=color:black> the </span></span></span><span lang=EN-GB style=font-size:10.0pt><span cambria= style=font-family:><span style=color:black>forward-backward translation method. The data was descriptively analyzed. Cronbach’s α internal consistency coefficient and test-retest analyses were conducted for reliability. Pearson’s correlation coefficient (r) </span></span></span><span class=A2 minion= pro= style=font-family:><span style=color:black><span lang=EN-GB style=font-size:10.0pt><span cambria= style=font-family:><span style=color:black>was used to analyze the relationship between the </span></span></span></span></span><span lang=EN-GB style=font-size:10.0pt><span cambria= style=font-family:><span style=color:black>MusiQoL index and dimensions. Exploratory factor analysis was conducted to test construct validity.</span></span></span> <span lang=EN-GB style=font-size:10.0pt><span cambria= style=font-family:><span style=color:black></span></span></span></span></span></span><br> <span style=font-size:12pt><span style=line-height:normal><span style=font-family:Aptos,sans-serif><b><span lang=EN-GB style=font-size:10.0pt><span cambria= style=font-family:><span style=color:#4f81bd>Findings</span></span></span></b><b><span lang=EN-GB style=font-size:10.0pt><span cambria= style=font-family:><span style=color:#4f81bd>:</span></span></span></b><span lang=EN-GB style=font-size:10.0pt><span cambria= style=font-family:><span style=color:black> The mean for the MusiQoL index was 64.18±17.13, while the dimension scores ranged from 54.73±28.12 to 84.05±18.85. High internal consistency was found for the MusiQoL index (α: 0.93). All dimensions of the MusiQoL showed high internal consistency (α: 0.75-0.95). The </span></span></span><span class=A2 minion= pro= style=font-family:><span style=color:black><span lang=EN-GB style=font-size:10.0pt><span cambria= style=font-family:><span style=color:black>intra-class correlation coefficient</span></span></span></span></span><span lang=EN-GB style=font-size:10.0pt><span cambria= style=font-family:><span style=color:black> of the MusiQoL dimensions and MusiQoL index were 0.949-0.971 and 0.911, respectively. There was a moderately strong relationship between the MusiQoL index and dimensions (r: 0.43-0.86). </span></span></span><span lang=EN style=font-size:10.0pt><span cambria= style=font-family:><span style=color:black>Bartlett's significance test of the correlation matrix is high and significant (χ²=2028.41; p<0.001). </span></span></span><span class=A4 minion= pro= style=font-family:><span style=color:black><span lang=EN-GB style=font-size:10.0pt><span cambria= style=font-family:><span style=color:black>The Kaiser-Meyer-Olkin coefficient was calculated as 0.801. </span></span></span></span></span><span lang=EN style=font-size:10.0pt><span cambria= style=font-family:><span style=color:black>The extracted factors explained 66.10% of the variance, </span></span></span><span class=A4 minion= pro= style=font-family:><span style=color:black><span lang=EN-GB style=font-size:10.0pt><span cambria= style=font-family:><span style=color:black>and the range of factor loading was 0.52-0.90. </span></span></span></span></span><span lang=EN-GB style=font-size:10.0pt><span cambria= style=font-family:><span style=color:black></span></span></span></span></span></span><br> <span style=font-size:12pt><span style=line-height:normal><span style=font-family:Aptos,sans-serif><b><span lang=EN-GB style=font-size:10.0pt><span cambria= style=font-family:><span style=color:#4f81bd>Conclusion</span></span></span></b><b><span lang=EN-GB style=font-size:10.0pt><span cambria= style=font-family:><span style=color:#4f81bd>:</span></span></span></b> <span lang=EN-GB style=font-size:10.0pt><span cambria= style=font-family:><span style=color:black>The Croatian version of the MusiQoL questionnaire is valid and reliable for measuring the quality of life among Croatian-speaking MS patients. It is especially useful for measuring health-related quality of life in clinical practice.</span></span></span></span></span></span> Multiple Sclerosis,Quality of Life,Patients,Croatia, 119 125 http://hehp.modares.ac.ir/browse.php?a_code=A-10-87271-1&slc_lang=en&sid=4