. 2012 Jan 6;65(Suppl 1):42–47. doi: 10.1007/s12070-011-0443-z

Table 5.

Distribution of lymph nodes according to etiology (N = 423)

Lymph nodes (n)			Non-specific inflammation n (%)	Tuberculosis n (%)	Cancer n (%)	X² of goodness of fit, df, P
Group	Level (American Head Neck Society Classification)		Non-specific inflammation n (%)	Tuberculosis n (%)	Cancer n (%)	X² of goodness of fit, df, P
Jugulo-omohyoid (72)	III	Observed	6 (8.3)	27 (37.5)	39 (54.2)	23.2, 2, <0.001
Jugulo-omohyoid (72)	III	Expected	24 (33.33)	24 (33.33)	24 (33.33)	23.2, 2, <0.001
Jugulo-diagastric (114)	II	Observed	39 (34.2)	60 (52.6)	15 (13.2)	26.9, 2, <0.001
Jugulo-diagastric (114)	II	Expected	38 (33.33)	38 (33.33)	38 (33.33)	26.9, 2, <0.001
Post-auricular (45)		Observed	18 (40.0)	27 (60.0)	0	25.2, 2, <0.001
Post-auricular (45)		Expected	15 (33.33)	15 (33.33)	15 (33.33)	25.2, 2, <0.001
Submandibular (81)	I B	Observed	27 (33.3)	45 (55.6)	9 (11.1)	24.0, 2, <0.001
Submandibular (81)	I B	Expected	27 (33.33)	27 (33.33)	27 (33.33)	24.0, 2, <0.001
Submental (36)	I A	Observed	15 (41.7)	15 (41.7)	6 (16.6)	4.5, 2, >0.10
Submental (36)	I A	Expected	12 (33.33)	12 (33.33)	12 (33.33)	4.5, 2, >0.10
Supraclavicular (75)	V B	Observed	6 (8.0)	18 (24.0)	51 (68.0)	43.4, 2, <0.001
Supraclavicular (75)	V B	Expected	25 (33.33)	25 (33.33)	25 (33.33)	43.4, 2, <0.001