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Table 1 Prevalence of gout according to the liberal, base, and strict case definitions with patient characteristics for the three groups

From: Incidence and prevalence of gout in Western Sweden

  Liberal case definition n = 22,243 Base case definition n = 16,833 Strict case definition n = 6184
Total population 1,237,935
Total prevalence (95 % CI) 1.8 (1.77–1.82) 1.36 (1.34–1.38) 0.5 (0.49–0.51)
Sex (male), % 70 % 72 % 79 %
Age 2012 (years), mean (SD) 69 (14) 68 (14) 68 (14)
Level of educationa
 9 years or less 47 % 45 % 45 %
 9 to 12 years 38 % 39 % 40 %
 More than 12 years 15 % 16 % 15 %
Co-morbidities
 Hypertension 68 % 63 % 67 %
 Diabetes 23 % 20 % 21 %
 Ischemic heart disease 27 % 25 % 28 %
 Congestive heart failure 20 % 18 % 22 %
 Stroke 14 % 13 % 14 %
 Renal disease 19 % 17 % 20 %
 Diuretic treatment
  Thiazide 21 % 20 % 20 %
  Loop 41 % 37 % 37 %
  Potassium conserving diuretics 22 % 20 % 20 %
  1. a4 % missing data on level of education in the liberal case definitions and 2 % missing in base and strict case definition
  2. CI confidence interval, SD standard deviation