Skip to main content

Table 1 General characteristics and their relationship with lymph node metastasis (χ2-test and Fisher’s exact test)

From: Risk factors for lymph node metastasis and surgical scope in patients with cN0 non-small cell lung cancer: a single-center study in China

Variables

Total

pN0

pN1 + N2

χ2

p

All patients

650

606 (93.2%)

44 (6.8%)

  

Gender

   

1.595

0.207

 Female

398

375 (94.2%)

23 (5.8%)

  

 Male

252

231 (91.7%)

21 (8.3%)

  

Age, years

   

0.794

0.435

 < 60

342

316 (92.4%)

26 (7.6%)

  

 ≥ 60

308

290 (94.2%)

18 (5.8%)

  

Smoking history

   

8.439

0.004

 None

464

441 (95.0%)

23 (5.0%)

  

 Yes

186

165 (88.7%)

21 (11.3%)

  

Pathological type

   

0.951

0.633

 Adenocarcinoma

601

561 (93.3%)

40 (6.7%)

  

 Squamous cell carcinoma

36

33 (91.7%)

3 (8.3%)

  

 Other types of malignant tumors*

13

12 (92.3%)

1 (7.7%)

  

Tumor locations

   

6.247

0.178

 Right upper lobe

243

232 (95.5%)

11 (4.5%)

  

 Right middle lobe

53

48 (90.6%)

5 (9.4%)

  

 Right lower lobe

99

92 (92.9%)

7 (7.1%)

  

 Left upper lobe

183

169 (92.3%)

14 (7.7%)

  

 Left lower lobe

72

65 (90.3%)

7 (9.7%)

  
  1. pN0: Pathological diagnosis without lymph node metastasis. pN1 + N2: Pathological diagnosis with N1 and/or N2 metastasis
  2. *The “other types of malignant tumors” patients included 2 patients with undifferentiated carcinoma, 5 patient with carcinoid, 1 patient with large cell carcinoma and 5 patient with adenosscale squamous cell carcinoma. Fisher's exact test is applied to the data