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Table 2 Assignment description of influencing factors

From: Risk factors for lymph node metastasis and surgical methods in patients with early-stage peripheral lung adenocarcinoma presenting as ground glass opacity

Influencing factorAssignment description
GenderMan =1, Female = 2
Age (year)< 60 = 1,  ≥ 60 = 2
Smoking historyNo = 0, YES = 1
Tumor size (cm)< 1.0 = 1, 1.0–2.0 = 2, 2.1–3.0 = 3
Consolidation tumor ratio(C/T)
 PGGONo = 0, YES = 1
 GGO-predominantNo = 0, YES = 1
 Solid-predominantNo = 0, YES = 1
 SolidNo = 0, YES = 1
Serum CEA (ng/ml)≤5 = 1, >5 = 2
Tumor location
 Right upper lobeNo = 0, YES = 1
 Right middle lobeNo = 0, YES = 1
 Right lower lobeNo = 0, YES = 1
 Left upper lobeNo = 0, YES = 1
 Left lower lobeNo = 0, YES = 1
Operations type
 WedgeNo = 0, YES = 1
 SegmentectomyNo = 0, YES = 1
 LobectomyNo = 0, YES = 1
Pathological type
 AISNo = 0, YES = 1
 MIANo = 0, YES = 1
 IMANo = 0, YES = 1
Visceral invasionNo = 0, YES = 1
Pleural invasionNo = 0, YES = 1