title: Development of a reliable and valid psychosocial measure of self-perception of health in type 2 diabetes.
abstract: OBJECTIVE
  The aim was to develop a reliable and valid psychosocial measure of self-perception of health in type 2 diabetes.
  
  
  METHODS
  Item analysis and factor analyses were done in order to stabilize and establish principal components of the questionnaire. Reliability (internal consistency aspect) was established using Chronbach's alpha method. Concurrent and discriminant validities were established using conventional methods.
  
  
  RESULTS
  Factor analysis yielded 12 significant factors (eigen value > or =1), but first six components were retained based on Scree test. These six principal varimax factors explain 49.7% of variance of psychosocial measure of self-perception of health.
  
  
  CONCLUSIONS
  The final version after all these psychometric procedures had 27 items with six principal components. They were appropriately named as follow: (I) Positive self-feeling; (II) Sociality; (III) Attention seeking; (IV) Feel healthy; (V) Worry about health; (VI) Dependence. Total variance explained is 49.7%.
authors.affiliation: Diabetes Research Centre, MV Hospital for Diabetes and WHO Collaborating Centre for Research, Education and Training in Diabetes 4, Main Road, Royapuram, Chennai.
authors.forename: P R
authors.initials: PR
authors.lastname: Rao
authors.forename: R
authors.initials: R
authors.lastname: Shobhana
authors.forename: A
authors.initials: A
authors.lastname: Lavanya
authors.forename: C
authors.initials: C
authors.lastname: Padma
authors.forename: V
authors.initials: V
authors.lastname: Vijay
authors.forename: A
authors.initials: A
authors.lastname: Ramachandran
mesh_terms: D001294:Attitude to Health / Q000208:ethnology; D003924:Diabetes Mellitus, Type 2 / Q000208:ethnology / Q000503:physiopathology*; D005260:Female; D006801:Humans; D007194:India; D008297:Male; D011594:Psychometrics / Q000295:instrumentation*; D015203:Reproducibility of Results; D012649:Self Concept; D018434:Sickness Impact Profile; D011795:Surveys and Questionnaires