Baseline characteristics of participants

Characteristic2-monthly monitoring (n = 40)Annual monitoring (n = 27)
Age (yrs)57.3 (11.3)52.8 (17.2)
Gender36 cisgender men (90%)
3 cisgender women (7.5%)
1 transgender woman (2.5%)
25 cisgender men (92.6%)
2 cisgender women (7.4%)
Ethnicity36/40 White (90%)
3/40 Asian (7.5%)
1/40 Black (2.5%)
26/27 White (96.3%)
1/27 Asian (3.7%)
Flares (in 12 months)3.2 (4.71)5.3 (5.34)
Duration of gout (yrs)11.45 (10.57)9.21 (6.42)
Tophi12/40 (30%)
Tophus number 4.8
Max size 13.6 (14.7) mm
8/27 (29.6%)
Tophus number 4.8
Max size 14.4 (14.8) mm
Urate level (mmol/L)0.28 (0.075) (Study entry)
0.26 (0.04) (Optimised)
0.37 (0.12) (Study entry)
0.29 (0.04) (Optimised)
Urate lowering therapyAllopurinol 39/40
(mean dose 410 mg)
Febuxostat 1/40 (120 mg)
Allopurinol 27/27
(mean dose 322 mg)
Co-existing conditions
Obesity (BMI ≥ 30)17/40 (42.50%)15/27 (55.56%)
eGFR < 60 mL/min per 1.73 m23/40 (7.50%)1/27 (3.70%)
Type 2 diabetes2/40 (5.00%)3/27 (11.11%)
Hypertension16/40 (40.00%)9/27 (33.33%)
Hyperlipidaemia8/40 (20.00%)7/27 (25.93%)

Baseline characteristics of participants are reported as mean (standard deviation) for continuous variables or total number (percentage) for categorical variables. Note that all participants achieved urate target following dose optimisation at study entry before commencing randomised monitoring allocation