International Journal of Preventive Medicine (Int J Prev Med)2008-78021052019060120592059ENSocial Determinants of Health Research Center, Institute for Futures Studies in Health, Kerman University of Medical Sciences, KermanDepartment of Community and Preventive Medicine, School of Medicine, Kerman University of Medical Sciences, Kerman20190601<p><span class="fontstyle0"><strong>Background</strong>: </span><span class="fontstyle2">Currently, in low‑ and middle‑income countries, the problem of overweight and obesity is increasing at alarming rate. Along with well‑known factors, psychosocial factors such as low self‑effcacy highly associated with these problems. Hence, it is necessary to assess individual self‑effcacy in weight management consultations using valid instrument. The aim of this study<br />was to determine psychometric properties of the Persian version of the Weight Effcacy Lifestyle Questionnaire‑Short Form (WEL‑SF). </span></p><p><span class="fontstyle0"><strong>Methods</strong>: </span><span class="fontstyle2">A cross‑sectional study carried out on 400 women referring to urban community health centers in Kerman Province, Iran. Data collected using a<br />questionnaire contained demographic data and Persian version of WEL‑SF. The reliability of the questionnaire determined using Cronbach’s alpha. The construct validity evaluated by exploratory principal component analysis (PCA) and confrmatory factor analysis. Data were analyzed by SPSS version 19 and Lisrel 8.8. </span></p><p><span class="fontstyle0"><strong>Results</strong>: </span><span class="fontstyle2">Internal consistency of WEL‑SF was 0.83 using Cronbach’s alpha. In the PCA, two factors were extracted with the total amount of 62.6% explained variance.<br />In confrmatory factor analysis, the model had acceptable goodness of ft indices. </span></p><p><span class="fontstyle0"><strong>Conclusions</strong>: </span><span class="fontstyle2">The Persian version of WEL‑SF had excellent psychometric properties.<br /></span></p><p><span class="fontstyle0" style="color: #00652e;"><strong>Keywords</strong>: </span><span class="fontstyle3">Body weight, reliability, self‑effcacy, validity</span></p>http://ijpm.mui.ac.ir/index.php/ijpm/article/view/2059http://ijpm.mui.ac.ir/index.php/ijpm/article/download/2059/717717877