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Table 3 Analysis of the number of positive lymph nodes using the Cox proportional hazards regression model

From: Assessment of lymph node status in gallbladder cancer: location, number, or ratio of positive nodes

Cutoff value for positive node number

χ2 score

P value

0, ≥1

5.217

0.022

0, 1, ≥2

7.832

0.020

0, 1–2, ≥3

7.611

0.022

0, 1–3, ≥4

13.234

0.001

0, 1–4, ≥5

7.213

0.027

0, 1–5, ≥6

5.275

0.072

0, 1–6, ≥7

5.275

0.072

0, 1–7, ≥8

5.233

0.073