title: [A measure of chronic respiratory disease questionnaire for clinical trail].
abstract: OBJECTIVE
  The aim of this paper was to investigate the reliability and validity of the Chronic respiratory disease questionnaire (CRQ) in China.
  
  
  METHODS
  Sixty-eight patients with chronic respiratory disease who were in hospital from January to November, 1999 were surveyed with CRQ. Eighteen patients were investigated repeatedly with CRQ in one week to test the reliability; before and the 10th day after treatment, 50 patients were surveyed twice with CRQ and the peakflow of these patients were also detected. The same doctor explained questionnaires and tested peakflow.
  
  
  RESULTS
  The correlated analysis of reliability was positive (r = 0.732, P < 0.01). The correlated analysis between the difference of twice-questionnaire scores and the difference of twice-peakflow value was also positive (r = 0.565, P < 0.01).
  
  
  CONCLUSIONS
  CRQ can be used by the clinical doctors of China.
authors.affiliation: Department of Respiratory Internal Medicine, Second Xiangya Hospital, Central South University, Changsha 410011, China.
authors.forename: S J
authors.initials: SJ
authors.lastname: Wu
authors.forename: L Y
authors.initials: LY
authors.lastname: Zhu
authors.forename: P
authors.initials: P
authors.lastname: Chen
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D029424:Pulmonary Disease, Chronic Obstructive; D011788:Quality of Life; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires