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Table 3 Subgroup analyses by number of prior gout flares in the baseline period: Longitudinal Multivariable-adjusted predictors of gout-related outpatient and Urgent/emergent/overnight visitsa by baseline gout flares (2 or fewer flares vs. >2 flares in the last year)

From: Health care utilization in patients with gout: a prospective multicenter cohort study

A. Patients with 2 or fewer gout flares in the last year (n = 71 patients)
Gout-related Outpatient visits
Age (for every 1 year increase in age) 1.00 (0.99, 1.02) 0.53
African American (ref, Caucasian) 2.51 (1.12, 5.64) 0.03
College Education (ref, no college education) 1.47 (0.92, 2.34) 0.10
Baseline sUA (for every 1 mg/dl increase) 0.95 (0.88, 1.03) 0.22
Baseline Charlson Index (for every unit increase) 0.94 (0.85, 1.04) 0.23
Gout attack in Past 3 months (ref, no Attack) 1.65 (1.27, 2.15) <0.01
Gout-related Urgent/emergent/overnight visitsa
Age (for every 1 year increase) 1.00 (0.97, 1.03) 0.87
African American (ref, Caucasian) 3.10 (0.79, 12.15) 0.10
College Education (ref, no college education) 0.66 (0.22, 1.94) 0.45
Baseline sUA (for every 1 mg/dl increase) 1.08 (0.94, 1.23) 0.28
Baseline Charlson Index (for every unit increase) 0.93 (0.78, 1.10) 0.37
Gout attack in past 3-months (ref, no Attack) 2.60 (1.27, 5.32) <0.01
B. Patients with >2 gout flares in the last year (n = 110 patients)
Gout-related Outpatient visits
Age (for every 1 year increase in age) 1.00 (0.99, 1.02) 0.44
African American (ref, Caucasian) 1.38 (0.94, 2.01) 0.10
College Education (ref, no college education) 0.86 (0.70, 1.05) 0.14
Baseline sUA (for every 1 mg/dl increase) 1.01 (0.96, 1.07) 0.66
Baseline Charlson Index (for every unit increase) 0.95 (0.88, 1.03) 0.18
Gout attack in Past 3 months (ref, no Attack) 1.03 (0.86, 1.25) 0.73
Gout-related Urgent/emergent/overnight visitsa
Age (for every 1 year increase) 1.01 (0.99, 1.04) 0.23
African American (ref, Caucasian) 2.39 (1.09, 5.24) 0.03
College Education (ref, no college education) 0.61 (0.43, 0.86) <0.01
Baseline sUA (for every 1 mg/dl increase) 1.04 (0.93, 1.17) 0.49
Baseline Charlson Index (for every unit increase) 0.98 (0.83, 1.15) 0.81
Gout attack in past 3-months (ref, no Attack) 0.76 (0.49, 1.18) 0.22
  1. aincludes walk-in-urgent-care-visits, emergency-room-visits, hospital-over-night-visits; Bold represents statistically significant p-values <0.05