Identification of ESM1 overexpressed in head and neck squamous cell carcinoma

Table 1 Correlations between ESM1 expression and clinical features of laryngeal or hypopharyngeal cancer

Clinical factor	Sample size	Correlation coefficient	p value
Age	21	− 0.493	0.023
Grade^a		− 0.138	0.552
1	3
2	13
3	5
Stage^a		− 0.044	0.850
I	3
II	5
III	7
IV	6

^aGrade and stage were referred to the American Joint Committee on Cancer (AJCC) TNM staging classification for laryngeal and hypopharyngeal cancer (7th edition, 2010)

ISSN: 1475-2867