Table 3a.

Tumor pathology characteristics by ethnicity (limited to patients with definitive surgery, N=396)

		Bantu (N=351)	Nilote (N=37)	Cushite (N=8)	Total (N=396)	P values-All*	P values - Bantus and Nilotes only*
		N (%)	N (%)	N (%)	N (%)
Tumor size	<2 cm	34 (9.8)	2 (5.4)	0 (0)	36 (9.2)	0.69**	0.37
	2-<5 cm	208 (59.9)	20 (54.1)	5 (62.5)	233 (59.4)
	>5cm	105 (30.3)	15 (40.5)	3 (37.5)	123 (31.4)
	Missing	4	0	0	4
Tumor overall grade	Grade 1 (low)	19 (5.6)	2 (5.6)	1 (12.5)	22 (5.8)	0.34**	0.82
	Grade 2 (intermediate)	132 (39.1)	16 (44.4)	5 (62.5)	153 (40.1)
	Grade 3 (high)	187 (55.3)	18 (50.0)	2 (25.0)	207 (54.2)
	Missing	13	1	0	14
Lymphovascular invasion	No	90 (25.6)	6 (16.2)	2 (25.0)	98 (24.8)	0.45	0.21
	Yes	261 (74.4)	31 (83.8)	6 (75.0)	298 (75.3)
	Missing	0	0	0	0
Lymph nodes with metastasis	No	146 (41.6)	15 (40.5)	2 (25.0)	163 (41.2)	0.73**	0.90
	Yes	205 (58.4)	22 (59.5)	6 (75.0)	233 (58.8)
	Missing	0	0	0	0
Extranodal extension	No	215 (61.3)	23 (62.2)	3 (37.5)	241 (60.9)	0.44**	0.91
	Yes	136 (38.8)	14 (37.8)	5 (62.5)	155 (39.1)
	Missing	0	0	0	0

^*p-values from chi-square test except where noted; missing data were excluded from percentage calculations and statistical comparisons.

^**p-values from Fisher exact test.