Table 1 Characteristics of patients with gout
CharacteristicGout cases (n = 164)
Age (years), mean (SD)63.4 (11.2)
Male gender, n (%)133 (81)
BMI (kg/m2), mean (SD)27.8 (4.0)
Age at first attack (years), mean (SD)50.5 (13.7)
Disease duration (years), median (range)10 (0–50)
Tophus, n (%)
    Total10 (6)
    Definite5 (3)
    Possible5 (3)
Fulfilled ARA preliminary criteria for primary gout (%)150 (92%)
Serum urate (μmol/l), mean (SD)*399 (107)
Serum creatinine (μmol/l), median (range)†94 (63 to 180)
GFR (ml/min), median (range)78 (19 to 170)
GFR (<60 ml/min), n (%)39 (24%)
Medication use, n (%)
    Taken diuretics prior to first attack25 (15)
    Low-dose aspirin51 (31)
    Allopurinol44 (30)
    Uricosuric agents0
Possible secondary gout, n (%)‡50 (30)
  • ARA, American Rheumatism Association; BMI, body mass index; GFR, glomerular filtration rate.

  • *Normal range 100–400 μmol/l; †normal range 60–120 μmol/l; ‡GFR<60 ml/min or taking diuretics prior to first attack.