Table 3: Multivariate analysis of risk factors associated with BM in NSCLC.

Variabe

OR

95%CI

p

CI (Yes vs No)

2.921

1.242-6.873

0.014

T status (T1-T2 vs T3-T4)

1.892

0.952-3.760

0.069

LN status (N0-N1 vs N2-N3)

2.828

1.262-6.337

0.012

Location (lobe) (Middle vs Not middle)

3.148

1.158-8.558

0.025

Histology (Ad vs Not Ad)

4.032

1.542-10.542

0.004

D-D (ng/ml) (>500 vs ≤500)

1.091

0.503-2.367

0.825

CEA (ng/ml) (>5 vs ≤5)

1.370

0.657-2.858

0.401

CA125 (U/ml) (>35 vs ≤35)

1.815

0.893-3.690

0.100

BM: brain metastasis; CI: cerebral infarction; D-D: D-Dimer; CEA: carcinoembryonic antigen; CA125: carbohydrate antigen 125.