From:  Low serum urate levels are not associated with increased mortality risk during urate-lowering treatment in patients with gout

 Discrete variables associated with increased risk of mortality in univariate Kaplan-Meier Log-Rank test.

VariableResultsEstimated survival (months)p-value
Gender: male vs. female204/1,454 (14.0%) vs. 36/164 (22.0%)222 vs. 126< 0.001
Age (median 64 years): age ≤ 64 years vs. > 64 years35/806 (4.3%) vs. 205/812 (25.2%)282 vs. 124< 0.001
Subcutaneous tophi: no vs. yes125/1,107 (11.3%) vs. 115/511 (22.5%)239 vs. 159< 0.001
Previous ULT: no vs. yes139/893 (15.6%) vs. 101/725 (13.9%)176 vs. 2220.120
Hypertension: no vs. yes41/644 (6.4%) vs. 199/974 (20.4%)275 vs. 152< 0.001
Polyarticular gout: no vs. yes128/1,063 (12.0%) vs. 112/555 (20.2%)247 vs. 150< 0.001
Diabetes: no vs. yes140/1,215 (11.5%) vs. 100/403 (24.8%)242 vs. 149< 0.001
Comorbidity strata: 1–2 vs. 3–424/427 (5.6%) vs. 114/533 (21.4%)*318 vs. 147< 0.001
Vascular event: no vs. yes104/1,127 (9.2%) vs. 136/491 (27.7%)245 vs. 121< 0.001
CKD: 1–2 vs. 3–581/1,023 (7.9%) vs. 159/595 (26.7%)252 vs. 112< 0.001
Baseline sUA strata (median 8.90 mg/dL)86/808 (10.6%) vs. 154/810 (19.0%)201 vs. 209< 0.001
sUA strata (mg/dL) during follow-up240/1,618 (14.83%)-< 0.001
    < 3.08/72 (11.1%)193
    3.0–5.9155/1,207 (12.8%)228
    6.0–8.961/294 (20.7%)128
    ≥ 916/45 (35.6%)24

CKD: chronic kidney disease; sUA: serum urate; ULT: urate-lowering therapy. * Comorbidity data were electronically incorporated in 2010 and were available for only 960 patients.