title: Self-reported health following percutaneous coronary intervention: results from a cohort followed for 3 years with multiple measurements.
abstract: OBJECTIVE
  Improvements in the treatment of coronary heart disease have increased the number of patients living with a chronic heart disease. Patient-reported outcomes are required to adequately describe prognosis. We report self-rated health in a population-based cohort of patients with coronary heart disease treated with percutaneous coronary intervention (PCI).
  
  
  METHODS
  Over 3 years, we followed 1,726 patients under 65 years treated with PCI with eight repetitive questionnaires. With the use of multiple imputation, we described the course of self-rated health using the short form 12-item survey's mental component summary (MCS) and physical component summary (PCS) and analyzed adjusted differences by sex, age, educational level, indication for PCI, and left ventricular ejection fraction along with an analysis of decrease in health status.
  
  
  RESULTS
  MCS scores increased during follow-up, while PCS scores were stable over time. Men rated higher in MCS and PCS than women, and older patients rated higher in MCS than younger. Other differences were negligible. Younger age was identified as a risk factor for marked decrease in mental health over time.
  
  
  CONCLUSIONS
  In a complete population-based cohort of PCI patients with multiple measurements, we found improvements in mental, but not physical health over time. Demographic differences in health were larger than disease-related differences.
authors.affiliation: Department of Occupational Medicine, Regional Hospital West Jutland, Herning, Denmark ; Danish Ramazzini Centre, Regional Hospital West Jutland, Herning, Denmark.
authors.forename: Karin
authors.initials: K
authors.lastname: Biering
authors.affiliation: Section of Biostatistics, Department of Public Health, Aarhus University, Aarhus, Denmark.
authors.forename: Morten
authors.initials: M
authors.lastname: Frydenberg
authors.affiliation: WestChronic, Regional Hospital West Jutland, Herning, Denmark ; Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark.
authors.forename: Niels Henrik
authors.initials: NH
authors.lastname: Hjollund
keywords: coronary heart disease; longitudinal study; multiple imputation; patient reported outcomes