Prognostic value of lymph nodes count on survival of patients with distal cholangiocarcinomas

Table 2 Impact of the number of retrieved lymph nodes on survival rates

Retrieved LNs counts	No.	3-yr OS	95%CI	3-yr CSS	95%CI
For all patients
1	26	29.51%	10.90-51.07	29.51%	10.90-51.07
3	23	35.33%	13.50-58.23	43.64%	18.10-66.88
5	18	46.55%	16.40-72.36	51.20%	17.95-77.03
7	22	63.31%	35.24-81.81	63.31%	35.24-81.84
9	16	57.29%	27.94-78.40	66.20%	32.37-86.00
11	16	37.09%	11.27-63.72	40.46%	12.19-67.77
13	11	28.41%	4.52-59.96	28.41%	4.52-59.96
15	13	16.46%	0.90-50.11	16.46%	0.90-50.11
17	15	15.80%	0.82-49.22	17.01%	0.84-51.90
19	9	34.29%	4.81-68.55	34.29%	4.81-68.55
21	12	47.62%	19.35-71.52	47.62%	19.35-71.52
23	5	33.86%	5.73-66.35	33.86%	5.73-66.35
25	15	37.50%	9.37-66.61	37.50%	9.37-66.61
For N0 patients
1	17	40.38%	14.15-65.68	40.38%	14.15-65.68
3	18	43.65%	17.20-67.68	47.01%	18.51-71.34
5	11	30.00%	1.23-71.92	37.50%	1.10-80.80
7	16	76.15%	42.67-91.65	76.15%	42.67-91.65
9	5	66.67%	5.41-94.52	66.67%	5.41-94.52
11	9	50.79%	15.67-78.07	59.26%	18.59-84.95
13	4	37.50%	1.10-80.80	37.50%	1.10-80.80
15	6	26.67%	0.97-68.61	26.67%	0.97-68.61
17	4	-	-	-	-
19	2	-	-	-	-
21	6	55.56%	7.34-87.61	55.56%	7.34-87.61
23	1	-	-	-	-
25	7	42.00%	7.01-75.34	52.50%	8.42-84.55
For N1 patients
1	9	14.29%	0.71-46.49	14.29%	0.71-46.49
3	5	33.33%	0.90-77.41	33.33%	0.90-77.41
5	7	53.57%	13.20-82.50	53.57%	13.20-82.50
7	6	55.56%	7.34-87.61	55.56%	7.34-87.61
9	11	45.00%	13.88-72.41	58.33%	18.02-84.41
11	7	25.00%	1.23-64.59	25.00%	1.23-64.59
13	7	41.67%	5.60-76.65	41.67%	5.60-76.65
15	7	35.71%	1.41-77.98	35.71%	1.41-77.98
17	11	17.05%	0.84-51.92	18.94%	0.87-55.82
19	7	26.67%	0.97-68.61	26.67%	0.97-68.61
21	6	43.64%	11.29-72.96	43.64%	11.29-72.96
23	4	-	-	-	-
25	8	28.57%	4.11-61.15	28.57%	4.11-61.15

CI: Confidence interval; CSS: Cancer-specific survival; LNs: Lymph nodes; OS: Overall survival.