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 visits^a by baseline gout flares (2 or fewer flares vs. >2 flares in the last year)

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

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

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

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