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Table 1 Patient and tumor characteristics

From: Safety of stereotactic body radiation therapy for localized prostate cancer without treatment planning MRI

 

MRI

CT alone

p-value

Patient number

Average (95% CI)

Patient number

Average (95% CI)

Age

3248

67.2 (66.9–67.4)

162

69.9 (68.7–71.2)

 < 0.001

PSA (mg/mL)

3248

9.3 (8.7–9.9)

162

9.7 (8.1–11.2)

0.643

 

Patient number

Percentage

Patient number

Percentage

p-value

AJCC 7-edition stage

     

Tx

105

3.23

1

0.62

0.279

T1

2512

77.34

123

75.93

 

T2

588

18.10

38

23.46

 

T3–T4

43

1.32

0

0

 

Grade group

     

1

862

26.54

38

23.46

 < 0.001

2

1200

36.95

52

32.10

 

3

704

21.67

25

15.43

 

4

318

9.79

34

20.99

 

5

164

5.05

13

8.02

 

Risk Group

     

Low

670

20.63

29

17.90

 < 0.001

Intermediate

1993

61.36

81

50.00

 

High

585

18.01

52

32.10

 

Reason

Patient Number (n = 162)

Percentage

   

Reasons for MRI omission

     

Pacemaker

61

37.65

   

AICD

26

16.05

   

MRI incompatible implanted device*

19

11.72

   

Image fusion not possible due to anatomy

11

6.79

   

Claustrophobia, anxiety, or patient refusal

8

4.93

   

Intolerability not otherwise specified

37

22.83

   
  1. *Implant, hardware, bullets, shrapnel, neurostimulator, VP shunt