Table 6.

ANOVA for Differences in Lymphoid Aggregate Density among Stages for Neck (de Serres staging system⁴)

		Lymphoid Aggregate Density
Stage	N	Mean density (count/mm2) ± SD	P-value
I	8	0.020 ± 0.012	0.039*
II	6	0.036 ± 0.019
III	2	0.014 ± 0.003
IV	3	0.048 ± 0.011
V	3	0.018 ± 0.015

^*p < 0.05.