title: Population-based erythrocyte sedimentation rates in 3910 subjectively healthy Norwegian adults. A statistical study based on men and women from the Oslo area.
abstract: OBJECTIVE
  To establish age- and sex-specific reference limits for the erythrocyte sedimentation rate (ESR) in asymptomatic Norwegian adults.
  
  
  METHODS
  Single ESR recordings were obtained by the classical or a modified Westergren method from 2145 men and 1765 women (93% being blood donors) with age range 20-90 years, and analysed statistically.
  
  
  RESULTS
  There was a significant positive association between ESR level and age, consistent with a parabolic pattern in men but a linear one in women. The mean values for men were about 3 mm h-1 at 20 years, 6 mm h-1 at 55 years, and 10 mm h-1 at 90 years, and 6, 9, and 11 mm h-1 respectively for women. These averages (predicted by regression lines) were significantly higher in women up to the age of 75 years, after which the estimated sex-specific 95% confidence limits for mean values were found to overlap.
  
  
  CONCLUSIONS
  The upper reference levels expected to be exceeded only by chance in 5% of single individual recordings at the ages of 20, 55 or 90 years, respectively, were estimated to be 12, 14 and 19 mm h-1 for men, and 18, 21 and 23 mm h-1 for women. Higher values should be controlled and, if confirmed, lead to a clinical check-up. However, about 76% of our overall material had ESR values lower than 9 mm h-1. Knowledge of each person's baseline ESR value might increase the disease-predictive ability of the test. If several measurements over years reveal a steeper rise with age than depicted in our population-based curves, it should be taken seriously, even when each reading is below the population-based reference limits.
authors.affiliation: Institute of Pathology, University of Oslo, Norway.
authors.forename: P
authors.initials: P
authors.lastname: Wetteland
authors.forename: M
authors.initials: M
authors.lastname: Røger
authors.forename: H E
authors.initials: HE
authors.lastname: Solberg
authors.forename: O H
authors.initials: OH
authors.lastname: Iversen
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001799:Blood Sedimentation; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009664:Norway; D012016:Reference Values; D012727:Sex Characteristics