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Table 1 Baseline characteristics of patients

From: Propensity score-matched analysis comparing hippocampus-avoidance whole-brain radiotherapy plus simultaneous integrated boost with hippocampus‑avoidance whole-brain radiotherapy alone for multiple brain metastases-a retrospective study in multiple institutions

Patient Characteristic

HA-WBRT+SIB

(n=56)

HA-WBRT

(n=56)

P value

Age(years), n (%)

0.295

30~60

23(41)

22(39)

 

60~80

33(59)

34(61)

 

Gender, n(%)

0.848

Male

33(59)

32(57)

 

Female

23(41)

24(43)

 

KPS scores, n(%)

0.894

90

13(23)

11(20)

 

80

34(61)

36(64)

 

70

9(16)

9(16)

 

Primary focus, n(%)

0.194

NSCLC

39(69)

41(73)

 

Breast cancer

6(10.5)

3(5)

 

Esophageal cancer

6(10.5)

2(4)

 

Other cancer

5(9)

10(18)

 

No. of BMs, mean(range), n

7.89 (4-15)

7.69 (4-15)

0.733

Sum of maximum diameter of BMs mean (range), cm

8.74 (3.5-19.1)

7.79 (3.4-19.7)

0.220

Volume PGTV, median (rang,cm3)

11.47 (5.35-29.21)

10.24 (5.2-30.13)

0.211

maximum dose of the hippocampus median (rang, Gy)

13.42(10.63-14.72)

12.85(11.2-14.12)

0.287

mean dose of the hippocampus, mean (rang, Gy)

7.84(5.56-9.35)

7.33(5.61-9.01)

0.071

extracerebral metastases, n(%)

0.552

 Yes

18(32)

21(37)

 

 No

38(68)

35(63)

 

Complications of BMs,n(%)

0.237

 Yes

33(59)

39(70)

 

 No

23(41)

17(30)

 

Systemic therapy,n(%)

0.696

 Yes

36(64)

34(61)

 

 No

20(36)

22(39)

 

Neurologic function status,n(%)

0.897

 NO neurologic symptoms:fully active at home/work without assistance

29(51.8)

26(46.4)

 

 Minor neurologic symptoms:fully active at home/work without assistance

19(33.9)

21(37.5)

 

 Moderate neurologic symptoms:fully active at home/work but requires assistance

7(12.5)

7(12.5)

 

 Moderate neurologic symptoms:less than fully active at home/work and requires assistance

1(1.8)

2(3.6)

 

Education(>high school v.≤ high school),n(%)

0.980

 No formal education

3(5.3)

5(8.9)

 

 Primary school

26(46.43)

24(42.9)

 

 Secondary school

14(25)

16(28.5)

 

 High school

7(12.5)

6(10.7)

 

 College or associate’s degree

2(3.6)

2(3.6)

 

 Bachelor’s degree

2(3.6)

2(3.6)

 

 Master’s degree

2(3.6)

1(1.8)

 

 Doctoral or professional degree

0

0

 
  1. Abbreviations: HA-WBRT+SIB Hippocampus-avoidance whole-brain radiotherapy with a simultaneous integrated boost, HA-WBRT Hippocampus-avoidance whole-brain radiotherapy, No Number, KPS Karnofsky Performance Status, BMs brain metastases