Preoperative factors associated with lymph node metastasis in small adenocarcinoma (≤3 cm).

Logistic regression test (Univariate analyses).LD: diameter by lung window setting, MD: diameter by mediastinal window setting, TDR: tumour disappearance ratio (TDR = 1− MD/LD), CEA: carcinoembryonic antigen, cN: preoperative nodal status, CI: confidence interval, LN: lymph node.Preoperative factors associated with lymph node metastasis in small adenocarcinoma (≤3 cm).

logistic回归检验（Logistic regression test，单因素分析）。LD指肺窗测量直径（diameter by lung window setting，LD），MD指纵隔窗测量直径（diameter by mediastinal window setting，MD），TDR指肿瘤消失率（tumour disappearance ratio，TDR=1−MD/LD），CEA指癌胚抗原（carcinoembryonic antigen，CEA），cN指术前淋巴结状态（preoperative nodal status，cN），CI指置信区间（confidence interval，CI），LN指淋巴结（lymph node，LN）。本数据集聚焦≤3cm小腺癌中与淋巴结转移相关的术前因素。