title: Impact on cardiovascular events of increasing high density lipoprotein cholesterol with and without lipid lowering drugs.
abstract: OBJECTIVE
  To estimate the impact on cardiovascular events of changes in high density lipoprotein (HDL) adjusted for changes in total cholesterol.
  
  
  METHODS
  Cohort study based on a record linkage database.
  
  
  METHODS
  Community study in Tayside, Scotland, UK.
  
  
  METHODS
  18,815 patients were identified for the study between 1989 and 2001.
  
  
  METHODS
  Cardiovascular events.
  
  
  RESULTS
  5510 patients taking lipid lowering treatment who had not been hospitalised previously for cardiovascular disease had 314 cardiovascular events recorded (9407 person years of follow up). Patients whose HDL rose by > 20% were less likely to have an event (23.5/1000 person years, 95% confidence interval (CI) 17.3 to 29.6) compared with patients whose HDL did not rise (42.6/1000 person years, 95% CI 35.5 to 49.7, adjusted relative risk 0.60, 95% CI 0.44 to 0.83). HDL change and cardiovascular outcome were not significantly associated among patients who had been hospitalised previously for cardiovascular disease or among patients who were not taking lipid lowering drugs.
  
  
  CONCLUSIONS
  In this study a rise in HDL independently predicted reduced cardiovascular risk in patients taking lipid lowering treatment who had not been hospitalised previously for cardiovascular disease.
authors.affiliation: Health Informatics Centre, Division of Community Health Sciences, University of Dundee, Dundee, UK.
authors.forename: L
authors.initials: L
authors.lastname: Wei
authors.forename: M J
authors.initials: MJ
authors.lastname: Murphy
authors.forename: T M
authors.initials: TM
authors.lastname: MacDonald
mesh_terms: D002318:Cardiovascular Diseases / Q000097:blood* / Q000517:prevention & control; D008076:Cholesterol, HDL / Q000097:blood*; D015331:Cohort Studies; D005260:Female; D006801:Humans; D006949:Hyperlipidemias / Q000097:blood / Q000188:drug therapy*; D000960:Hypolipidemic Agents / Q000627:therapeutic use*; D008297:Male; D008875:Middle Aged; D016896:Treatment Outcome
chemical_list: D008076:Cholesterol, HDL; D000960:Hypolipidemic Agents