Characteristic Univariable Multivariable
N OR1 95% CI1 p-value OR1 95% CI1 p-value
Regions 1,678
Midwest
Northeast 1.23 0.95, 1.60 0.12 1.35 0.93, 1.97 0.11
South 0.91 0.70, 1.18 0.47 1.00 0.70, 1.42 0.99
West 1.84 1.37, 2.49 <0.001 2.19 1.45, 3.33 <0.001
Tumor Grade 868
Moderately differentiated
Poorly differentiated 0.78 0.58, 1.04 0.092 0.73 0.54, 0.99 0.040
Well differentiated, differentiated 0.79 0.53, 1.18 0.25 0.74 0.49, 1.12 0.16

1 OR = Odds Ratio, CI = Confidence Interval