title: Age-specific patterns of prostate-specific antigen testing among primary care physician visits.
abstract: BACKGROUND
  Early detection of prostate cancer is thought to be effective, and indirect evidence suggests that men aged 50 to 69 years will benefit most while those aged 70 and older will benefit least from it. The goal of our study was to describe usual care patterns for prostate-specific antigen (PSA) testing by primary care physicians in the United States.
  
  
  METHODS
  We analyzed office visits made by adult men to family physicians, general internists, general practitioners, and geriatricians recorded by the 1995 and 1996 National Ambulatory Medical Care Surveys. Our outcome measure was the probability of a primary care physician ordering a PSA test during a visit.
  
  
  RESULTS
  Seventeen percent of the tests reported were among men aged younger than 50 years, 50% were for men aged 50 to 69 years, and 33% were for men aged 70 years and older. The frequency of PSA testing was highest during visits by men aged 60 to 64 years (7.1%), 65 to 69 years (7.0%), 70 to 74 years (7.0%), and 75 to 79 years (6.3%) but lower for men aged older than 80 years (3.1%).
  
  
  CONCLUSIONS
  Our findings suggest that during the mid-1990s prostate cancer screening decisions by primary care physicians were not sensitive to patients' ages.
authors.affiliation: General Medicine Division, Medical Services, Massachusetts General Hospital, Boston 02114, USA.
authors.forename: M
authors.initials: M
authors.lastname: McNaughton Collins
authors.forename: R S
authors.initials: RS
authors.lastname: Stafford
authors.forename: M J
authors.initials: MJ
authors.lastname: Barry
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D003430:Cross-Sectional Studies; D005194:Family Practice / Q000706:statistics & numerical data*; D005853:Geriatrics; D006801:Humans; D007388:Internal Medicine; D008297:Male; D008875:Middle Aged; D009819:Office Visits / Q000706:statistics & numerical data; D010818:Practice Patterns, Physicians'; D011320:Primary Health Care / Q000706:statistics & numerical data*; D017430:Prostate-Specific Antigen / Q000097:blood*; D011471:Prostatic Neoplasms / Q000097:blood* / Q000175:diagnosis*; D014481:United States
chemical_list: D017430:Prostate-Specific Antigen