Table 3

Correlation between angiogenetic factors and conventional risk factors

VEGFCD34CD31CD105Vessel invasion
VEGF, vascular endothelial growth factor.
Stage
    IB8352023172616273013
    IIA1717351780
χ2 Value (p value)0.008 (0.929)1.970 (0.160)0.082 (0.775)0.908 (0.341)1.849 (0.174)
Smoker
    No1533242461
    Yes8371827182715303212
χ2 Value (p value)0.253 (0.615)0.001 (0.979)0.017 (0.896)0.213 (0.645)0.070 (0.791)
Surgical procedure
    Lobectomy728122311241025278
    Pneumonectomy214979779115
χ2 Value (p value)0.066 (0.798)1.374 (0.241)1.892 (0.169)0.558 (0.455)0.085 (0.770)
    Histology
    Squamous42491913151018217
    Non-squamous5181211716716176
χ2 Value (p value)0.106 (0.745)1.347 (0.246)0.767 (0.381)0.010 (0.921)0.055 (0.815)
Grading
    G147925656101
    G2319814814517175
    G3216414711711117
χ2 Value (p value)3.424 (0.180)1.382 (0.876)0.255 (0.880)2.091 (0.352)3.347 (0.188)