title: Factor structure of the General Health Questionnaire-28 (GHQ-28) from infertile women attending the Yazd Research and Clinical Center for Infertility.
abstract: BACKGROUND
  Nowadays, infertility problems have become a social concern, and are associated with multiple psychological and social problems. Also, it affects the interpersonal communication between the individual, familial, and social characteristics. Since women are exposed to stressors of physical, mental, social factors, and treatment of infertility, providing a psychometric screening tool is necessary for disorders of this group.
  
  
  OBJECTIVE
  The aim of this study was to determine the factor structure of the general health questionnaire-28 to discover mental disorders in infertile women.
  
  
  METHODS
  In this study, 220 infertile women undergoing treatment of infertility were selected from the Yazd Research and Clinical Center for Infertility with convenience sampling in 2011. After completing the general health questionnaire by the project manager, validity and, reliability of the questionnaire were calculated by confirmatory factor structure and Cronbach's alpha, respectively.
  
  
  RESULTS
  Four factors, including anxiety and insomnia, social dysfunction, depression, and physical symptoms were extracted from the factor structure. 50.12% of the total variance was explained by four factors. The reliability coefficient of the questionnaire was obtained 0.90.
  
  
  CONCLUSIONS
  Analysis of the factor structure and reliability of General Health Questionnaire-28 showed that it is suitable as a screening instrument for assessing general health of infertile women.
authors.affiliation: Department of Community Medicine, Medical School, Shiraz University of Medical Sciences, Shiraz, Iran.
authors.forename: Zahra
authors.initials: Z
authors.lastname: Shayan
authors.affiliation: Social Determinates of Health Research Center , Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
authors.forename: Zahra
authors.initials: Z
authors.lastname: Pourmovahed
authors.affiliation: Shiraz University of Medical Sciences, Shiraz, Iran.
authors.forename: Fatemeh
authors.initials: F
authors.lastname: Najafipour
authors.affiliation: Yazd Research and Clinical Center for Infertility, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
authors.forename: Ali Mohammad
authors.initials: AM
authors.lastname: Abdoli
authors.affiliation: Shiraz University of Medical Sciences, Shiraz, Iran.
authors.forename: Fatemeh
authors.initials: F
authors.lastname: Mohebpour
authors.affiliation: Department of Medical Education, Medical School, Tehran University Medical Sciences, Tehran, Iran.; Education of Development Centre (EDC Department), Medical School, Jahrom University Medical Science, Jahrom, Iran.
authors.forename: Sedighe
authors.initials: S
authors.lastname: Najafipour
keywords: Factor structure; General Health Questionnaire-28; Infertile women