title: Use of Medicare claims data to evaluate outcomes in elderly patients undergoing lung resection for lung cancer.
abstract: OBJECTIVE
  To estimate, using Medicare claims data, the outcomes in elderly Americans undergoing lung resection for lung cancer.
  
  
  METHODS
  We used discharge diagnosis and procedure codes in 1983 to 1985 Medicare hospital (part A) claims records to identify patients who underwent lung resection for lung cancer; we assessed perioperative, one-year, and two-year survival using Medicare enrollment file data.
  
  
  METHODS
  From a nationally random sample of 1,138,000 Medicare beneficiaries over 65 years of age, we identified 1,290 individuals who fulfilled our definition for lung resection for lung cancer.
  
  
  RESULTS
  Overall perioperative (30-day) mortality was 7.4 percent. Postoperative survival at one and two years was 69 percent and 54 percent, respectively. Male sex, older age, and pneumonectomy, as opposed to a lesser procedure, were associated with reduced perioperative and one-year and two-year survival. The adverse effect of advanced age on one-year and two-year survival following lung resection was not explained by the lower life expectancy of older individuals.
  
  
  CONCLUSIONS
  Medicare claims data can be used to estimate likely outcomes for elderly patients undergoing surgery for lung cancer. Expected outcomes vary with the patient's age, sex, and the type of surgical procedure performed.
authors.affiliation: Department of Medicine, Johns Hopkins University, Baltimore.
authors.forename: J
authors.initials: J
authors.lastname: Whittle
authors.forename: E P
authors.initials: EP
authors.lastname: Steinberg
authors.forename: G F
authors.initials: GF
authors.lastname: Anderson
authors.forename: R
authors.initials: R
authors.lastname: Herbert
mesh_terms: D000368:Aged; D005260:Female; D006801:Humans; D007344:Insurance Claim Reporting; D008175:Lung Neoplasms / Q000401:mortality / Q000601:surgery*; D008297:Male; D006278:Medicare; D010043:Outcome and Process Assessment, Health Care; D011013:Pneumonectomy / Q000401:mortality; D014481:United States