Table 2.

Poisson regression predicting number of LNs sampled (n = 1364).

	Incidence Rate Ratio	95% Confidence Interval
		Lower LImist	Upper LImist	P- Value
Year of Diagnosis	1.036	1.029	1.043	<0.001
Age (Continuous)	0.986	0.982	0.991	<0.001
Race
White	1
Black	0.842	0.789	0.899	<0.001
Hispanic	0.716	0.676	0.758	<0.001
Other	0.974	0.879	1.079	0.615
Unknown	1.303	1.049	1.620	0.017
Gender
Male	1
Female	0.978	0.934	1.025	0.350
Tumor Size (Continuous)	1.006	1.003	1.009	<0.001
Laterality
Left	1
Right	0.724	0.691	0.758	<0.001
Stage
Localized	1
Distant	1.183	1.114	1.257	<0.001
Regional	1.199	1.137	1.264	<0.001