title: Impact of the British Thoracic Society chronic obstructive pulmonary disease guidelines on patients' health status, healthcare resource use and health-related quality of life.
abstract: BACKGROUND
  British Thoracic Society (BTS) guidelines for chronic obstructive pulmonary disease (COPD) management are a consensus view and their impact on patients is unknown.
  
  
  OBJECTIVE
  To determine the impact of the BTS COPD guidelines on patients' health status, healthcare resource use and health-related quality of life (HRQL).
  
  
  METHODS
  This was an observational, parallel group, cluster-controlled study comparing patients who were managed in general practices according to BTS guidelines (active practices) or usual care (control practices).
  
  
  METHODS
  13 active and 13 matched control practices participated in the study. Patients completed the St. George's Respiratory Questionnaire (SGRQ) and Short Form 36 (SF-36) at their screening visit and 12 months later during which time their airway function was measured. Healthcare resource use and drug utilisation data during the study period were also recorded.
  
  
  RESULTS
  279 and 230 patients from active and control practices respectively were eligible for analysis. No significant differences in airway function were detected between patients managed at active and control practices. There were no significant differences in healthcare resource use and disease-specific quality of life indicators as measured by the SGRQ. There were some significant differences in health status between patients managed at active practices compared with controls as measured by the SF-36.
  
  
  CONCLUSIONS
  Patients managed in general practice according to BTS guidelines experienced minor improvements in health status. Treatment strategy had no detectable impact on patients' airway function and healthcare resource use.
authors.affiliation: CATALYST Health Economics Consultants, 34b High Street, Northwood, Middlesex HA6 1BN, UK. julian.guest@catalyst-health.co.uk
authors.forename: Julian F
authors.initials: JF
authors.lastname: Guest
authors.forename: Susan J
authors.initials: SJ
authors.lastname: Varney
authors.forename: John
authors.initials: J
authors.lastname: Diggle