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. 2021 Feb;10(2):995–1006. doi: 10.21037/tlcr-21-149

Table 2. Univariate and multivariate Cox regression analysis predicting recurrence and metastasis in NSCLC patients (n=347).

Characteristic Univariable analysis Multivariable analysis
HR 95% CI P HR 95% CI P
CTCs (FU) (<11 vs. ≥11) 5.690 2.780–11.647 0.000 5.489 2.660–11.326 0.000
T stage (Tis/T1/T2 vs. T3) 4.480 1.600–12.546 0.004 7.180 2.477–20.816 0.000
Lymph node metastasis (N0 vs. N1/N2) 3.289 1.781–6.073 0.000 2.169 1.120–4.202 0.001
CEA (ng/mL) (<8.55* vs. ≥8.55*) 2.286 1.149–4.550 0.019 1.860 0.919–3.764 0.084
Age (years) (<60 vs. ≥60) 1.157 0.677–1.977 0.594
Sex (female vs. male) 1.742 1.018–2.979 0.043 1.929 1.113–3.342 0.019
Smoking history (N vs. Y) 1.330 0.649–2.727 0.436
EGFR mutation (N vs. Y) 1.370 0.787–2.384 0.265

*, the cutoff-value of CEA as 8.55 ng/mL was according to the dichotomized value (as shown in Figure S2). NSCLC, non-small cell lung cancer; CTC, circulating tumor cell; FU, functional unit; HR, hazard ratio; CI, confidence interval; CEA, carcinoembryonic antigen.