A lower cut-off for lymph node harvest predicts for poorer overall survival after rectal surgery post neoadjuvant chemoradiotherapy

Table 2 Multivariate analysis of clinicopathologic factors related to disease-free and overall survival

Variables	Category	N	Disease-free survival		Overall survival
Variables	Category	N	Median ± SD (months)	P value	Median ± SD (months)	P value
Age at diagnosis (years)	< 50	18	81 ± 46	0.180	90 ± 38	0.370
	50–64	101	68 ± 42		73 ± 39
	65–74	74	63 ± 39		69 ± 37
	> 75	64	63 ± 39		65 ± 38
Gender	Male	174	63 ± 42	0.160	69 ± 39	0.470
Gender	Female	83	73 ± 38	0.160	76 ± 36	0.470
Neoadjuvant therapy	No	163	62 ± 40	0.060	68 ± 38	0.191
Neoadjuvant therapy	Yes	94	73 ± 41	0.060	77 ± 42	0.191
Type of operation	Ultra-low anterior resection	32	56 ± 38	0.908	61 ± 39	0.659
	Low anterior resection	168	67 ± 43		73 ± 40
	Hartmann’s procedure	19	55 ± 42		59 ± 38
	Abdominoperineal resection	38	77 ± 44		59 ± 42
Tumour staging	Stage 1	61	84 ± 39	< 0.001	85 ± 40	< 0.001
	Stage 2	61	67 ± 35		72 ± 38
	Stage 3	135	58 ± 38		64 ± 37
Lymph node harvest	< 12	53	61 ± 44	0.070	62 ± 42	0.051
Lymph node harvest	≥ 12	204	68 ± 42	0.070	73 ± 36	0.051

ISSN: 1477-7819