Table 2 Gout disease characteristics

Classification criteria

Aspirate proven 6 (25 %)

Clinical criteria 18 (75 %)

Disease duration, years, mean (SD)

17 (11)

Age of onset, years, mean (SD)

41 (18)

Acute flares in preceding 3 months, mean (SD)

1.3 (1.4)

1MTPJ flares in preceding 3 months, n (%)

6 (25 %)

History of 1MTPJ flares, n (%)

21 (88 %)

Presence of subcutaneous tophi, n (%)

17 (71 %)

Presence of 1MTPJ tophi, n (%)

6 (25 %)

Number of tophi in feet, mean (SD)

1.9 (3.5)

Total number of tophi, mean (SD)

6.1 (8.7)

Colchicine use, n (%)

13 (54 %)

Urate lowering therapy^a, n (%)

23 (96 %)

 Allopurinol use, n (%)

19 (79 %)

 Probenecid use, n (%)

3 (12 %)

 Benzbromarone use, n (%)

2 (8 %)

 Febuxostat use, n (%)

2 (8 %)