TABLE 1.

Patient characteristics based on TNM classification and AJCC stage grouping

	Stage grouping	PORT	POCT	Surgery alone
T1-2N1	II B	13	16	41
T1-2N2	IIIA	16	12	11
T3N1	IIIA	70	68	132
T3N2	IIIB	54	51	91
T4N1-3	IIIC	46	50	71
Total No. of patients		199	197	346

TNM = tumour, node, metastases based classification; AJCC = American Joint Committee on Cancer; PORT = postoperative radiation therapy; POCT = postoperative chemotherapy