Table 1

Correlation between B7-H1 expression on tumor cells and the clinicopathological characteristics of the 52 non-small cell lung cancers

B7-H1+ expression on tumor cellsP
Low (<11%)High (≥11%)
Patients2626
Age (mean ± SD) (yrs)64.9±1.768±2.10.28*
Sex
 Male20150.14
 Female611
Smoking habits
 Smoker1819NS
 Nonsmoker87
Histology
 SCC14170.4
 Adenocarcinoma129
Differentiation
 Well1050.13
 Moderate/poor1621
pT classifications
 T1860.54
 T2–41820
pN classifications
 N016150.78
 N1–31011
pStage classifications
 I13120.78
 II–IV1314
CD45+ cells47.8 ± 3.242.8 ± 3.10.27*
  • Abbreviations: NS, nonsignificant; SCC, squamous cell carcinoma.

  • * Student’s paired t test.

  • χ2 test.

  • Percentage of CD45-positive cells per 1000 total nuclei.