N = 114

Upper and middle lobes

Lower lobe

p value^*

Target location (n)

62

52

n/a^**

Gender (n) men

42

38

n/a

Women

20

14

n/a

Age (y)

71 ± 13 (34 - 89)

73 ± 8 (48 - 88)

0.122

Gross tumor volume (cc)

7.1 ± 8.4 (0.3 - 38.3)

10.4 ± 14.0 (0.3 - 77.5)

0.139