title: Chinese version of the Aging Perceptions Questionnaire (C-APQ): assessment of reliability and validity.
abstract: OBJECTIVE
  To assess the reliability and validity of the Chinese version of Aging Perceptions Questionnaire (C-APQ).
  
  
  METHODS
  Participants aged 65 years and over were recruited from February 2012 to November 2012. The Aging Perceptions Questionnaire was translated into Chinese version professionally. Content validity was examined by a panel of seven experts; item reliabilities were assessed by test-retest; internal consistency was assessed by Cronbach's α coefficient; half of the sample (N = 379) was selected to explore factorial structure of the C-APQ by exploratory factor analysis (EFA) and another half of the sample (N = 379) was selected to confirm the findings from the EFA by confirmatory factor analysis (CFA). Statistical package SPSS version 18.0 and Amos 17.0 were used for the analysis.
  
  
  RESULTS
  The Cronbach's α coefficient of the C-APQ was 0.884. The test-retest reliability was satisfactory, with all intraclass correlation coefficients greater than 0.4. The overall content validity index was greater than 0.99. Seven factors (timeline acute/chronic, timeline cyclical, emotional representations, control positive, control negative, consequences positive and consequences negative) were identified in EFA and confirmed in CFA.
  
  
  CONCLUSIONS
  The C-APQ could be a reliable and a valid measure of the self-perceptions of aging in the elderly in China, which may help to improve the life quality and extend longevity of the elderly.
authors: a Clinical Nursing Department, School of Nursing , Second Military Medical University , Shanghai , China.
authors: Xuemei
authors: X
authors: Chen
authors: b Dermatological Department, Changhai Hospital , Second Military Medical University , Shanghai , China.
authors: Yunqi
authors: Y
authors: Hu
authors: a Clinical Nursing Department, School of Nursing , Second Military Medical University , Shanghai , China.
authors: Daqiao
authors: D
authors: Zhu
authors: a Clinical Nursing Department, School of Nursing , Second Military Medical University , Shanghai , China.
authors: Juan
authors: J
authors: Li
authors: a Clinical Nursing Department, School of Nursing , Second Military Medical University , Shanghai , China.
authors: Lanshu
authors: L
authors: Zhou
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000523:psychology*; D002681:China; D005260:Female; D006801:Humans; D008297:Male; D011594:Psychometrics / Q000295:instrumentation*; D015203:Reproducibility of Results; D012649:Self Concept; D011795:Surveys and Questionnaires / Q000592:standards*
keywords: Aging Perceptions Questionnaire; Chinese version; old people; reliability validation; translation