Table 1 Patient demographics, comorbidities, and procedural details

Sex

Male

35

46

13

37

0.153

Female

41

54

22

63

Self-Identified Race

Asian

5

6

2

6

0.999

Black

15

20

5

14

0.999

Hispanic/Latino

2

2

2

6

0.999

White

55

72

26

74

0.999

Comorbid Conditions

Diabetes

9

12

3

8

0.227

Hypertension

49

64

29

83

0.009

Thyroid Disease

13

17

8

23

0.075

Osteoporosis

11

14

4

11

0.531

COPD

23

30

12

34

0.435

Tumor Region

Anterior

7

9

1

3

0.960

Anterolateral

3

4

4

11

0.041

Lateral

11

14

10

29

0.033

Posterolateral

5

6

9

26

0.021

Posterior

10

13

7

20

0.070

Central

36

47

4

11

0.809

Hilar

4

5

0

0

0.999

Distance to Closest Rib

Greater than 12 mm

46

61

6

17

Less than 12 mm

30

39

29

83

0.978

Lobe Affected

Upper

45

60

20

57

Middle

5

6

0

0

Lower

26

34

15

43

Right

49

64

22

63

Left

27

36

13

37

Tumor Staging

T1N0M0

51

67

28

80

T1N0M1

1

1

0

0

T2N0M0

8

11

3

8

T2N1M0

4

5

0

0

T2N3M0

1

1

0

0

T2N0M1

2

3

1

3

T3N0M0

4

5

0

0

T3N4M0

1

1

0

0

2^o Metastasis

4

5

3

8

Mean

Mean

p value

Age

72.6

71.7

0.376

BMI

26.8

25.7

0.850

Tumor Diameter (mm)

20.3

19.9

0.218

Cumulative Dose (Gy) ^a

54.7

56.7

0.259