Induction chemotherapy for the individualised treatment of hypopharyngeal carcinoma with cervical oesophageal invasion: a retrospective cohort study

Table 1 Patient characteristics

Characteristic	Classification	Total (N = 68)	Group A (N = 35)	Group B (N = 33)	χ² value	P value
Sex	Male	63	33	30	0.2843	0.5939
Sex	Female	5	2	3	0.2843	0.5939
Age (years)	≤ 60	50	26	24	0.1675	0.8970
Age (years)	> 60	18	9	9	0.1675	0.8970
Subsite	Pyriform sinus	27	14	13	0.0217	0.9892
	Post-cricoid region	23	12	11
	Posterior wall	18	9	9
Differentiation	High	14	8	6	0.3084	0.8571
	Moderate	35	18	17
	Poor	19	9	10
N classification	N0	19	8	11	0.4786	0.4890
N classification	N1–3	49	27	22	0.4786	0.4890
Drinking	Yes	42	22	20	0.0035	0.9532
Drinking	No	26	13	13	0.0035	0.9532
Smoking	Yes	47	26	21	0.4725	0.4918
Smoking	No	21	9	12	0.4725	0.4918

ISSN: 1477-7819