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Table 4 Multivariate analysis of predictive factors for lymph node metastasis (preoperative model)

From: Predictive risk factors for lymph node metastasis in patients with resected non-small cell lung cancer: a case control study

Predictive factors Pulmonary LN a metastasis (pN1+) Mediastinal LN a metastasis (pN2+) Any LN a metastasis (pN+) e
Central localization P = 0.002 b
OR = 2.9 c
CI = 1.5–5.6 d
P = 0.06
OR2.0
CI = 0.9–4.1
P = 0.005
OR = 2.6
CI = 1.3–5.1
Increased tumor size P = 0.043
OR = 1.2
CI = 1.0–1.3
P = 0.040
OR = 1.2
CI = 1.0–1.4
P = 0.005
OR = 2.5
CI = 1.3–4.4
  1. aLN Lymph node, bP P-Value, cOR Odds ratio, CI 95%, dCI Confidence interval, e Patients were divided in two groups according to tumor size (> 3 cm and ≤ 3 cm)