title: New empirical evidence of the validity of the Chronic Pain Acceptance Questionnaire: the differential influence of activity engagement and pain willingness on adjustment to chronic pain.
abstract: OBJECTIVE
  The aims of this study were to examine the internal structure of the Spanish version of the Chronic Pain Acceptance Questionnaire and present new empirical evidence regarding its validity.
  
  
  METHODS
  A sample of 315 chronic pain patients attending a pain clinic completed a battery of instruments to assess pain acceptance, general psychological acceptance, depression, anxiety, pain intensity, functional impairment, and current functioning.
  
  
  RESULTS
  Confirmatory factor analysis supported the validity of a 20-item version with two subscales corresponding to two independent factors: Activity Engagement and Pain Willingness. Structural Equation Modelling showed that the association between pain intensity and anxiety and depression was fully mediated by Activity Engagement which partially mediated the association between pain intensity and functioning. Pain Willingness partially mediated the influence of pain intensity on functional impairment.
  
  
  CONCLUSIONS
  These findings indicate the differential influence of both components on adjustment to chronic pain.
authors: Department of Psychobiology and Methodology of Behavioural Sciences, University of Málaga, Spain Department of Personality, Assessment and Psychological Treatments, University of Málaga, Spain. bendayan@uma.es
authors: Rebecca
authors: R
authors: Bendayan
authors: Rosa
authors: R
authors: Esteve
authors: María J
authors: MJ
authors: Blanca
mesh_terms: D000203:Activities of Daily Living; D000223:Adaptation, Psychological; D000328:Adult; D000368:Aged; D001007:Anxiety / Q000175:diagnosis*; D059350:Chronic Pain / Q000175:diagnosis* / Q000523:psychology*; D003863:Depression / Q000175:diagnosis*; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010147:Pain Measurement / Q000379:methods*; D011594:Psychometrics / Q000295:instrumentation; D011788:Quality of Life; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires