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Table 1 Patient Demographics and Clinical Characteristics

From: A prediction model for lymph node metastases using pathologic features in patients intraoperatively diagnosed as stage I non-small cell lung cancer

Variables

Value

Number

284

Age (years)

 Mean ± SD (range)

60.78 ± 9.2 (31–83)

Gender (%)

 Male

144 (51%)

 Female

140 (49%)

Pathology

 Squamous cell carcinoma

36 (13%)

 Adenocarcinoma

248 (87%)

Tumor location (%)

 Right Upper Lobe

82 (29%)

 Right Middle Lobe

16 (6%)

 Right Lower Lobe

39 (14%)

 Left Upper Lobe

77 (27%)

 Left Lower Lobe

51 (18%)

 Mixed lobes

19 (6%)

Differentiation (%)

 I

86 (30%)

 II

176 (62%)

 III

22 (8%)

Tumor size (cm)

 Mean ± SD (range)

2.44 ± 0.97 (0.4-4 cm)

Pleura invasion

 Absent

220 (77%)

 Present

64 (23%)

Bronchus invasion

 Absent

247 (87%)

 Present

37 (13%)

Multicentric invasion (%)

 Absent

264 (93%)

 Present

20 (7%)

Angiolymphatic invasion (%)

 Absent

274 (96%)

 Present

10 (4%)

Neural invasion

 Absent

283 (100%)

 Present

1 (0%)

  1. SD standard deviation