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Table 1 Baseline characteristics before and after propensity-score matching between IC + RT and CCRT groups

From: Induction Chemotherapy Followed by Radiotherapy versus Concurrent Chemoradiotherapy in elderly patients with nasopharyngeal carcinoma: finding from a propensity-matched analysis

Characteristics

Before Matching

P

After Matching

P

IC + RT(N = 111)

CCRT(N = 44)

IC + RT(N = 88)

CCRT(N = 44)

Age (y)

  

0.900

  

0.506

 Mean

64.09

64.59

 

64.16

64.59

 

 SD

3.20

4.06

 

3.20

4.06

 

Gender (%)

  

0.059

  

1.000

 Male

95(85.6)

38(86.4)

 

76(86.4)

38(86.4)

 

 Female

16(14.4)

6(13.6)

 

12(13.6)

6(13.6)

 

T-stage (%)

  

0.817

  

0.404

 T1

4(3.6)

1(2.3)

 

4(4.5)

1(2.3)

 

 T2

21(18.9)

11(25.0)

 

16(18.2)

11(25.0)

 

 T3

44(39.6)

16(36.4)

 

36(40.9)

16(36.4)

 

 T4

42(37.8)

16(36.4)

 

32(36.4)

16(36.4)

 

N-stage (%)

  

0.018

  

0.068

 N0

19(17.1)

11(25)

 

18(20.5)

11(25)

 

 N1

24(21.6)

17(38.6)

 

20(22.7)

17(38.6)

 

 N2

45(40.5)

14(31.8)

 

40(45.5)

14(31.8)

 

 N3

23(20.7)

2(4.5)

 

10(11.4)

2(4.5)

 

Clinical stage (%)

  

0.048

  

0.175

 II

4(3.6)

6(13.6)

 

4(4.5)

6(13.6)

 

 III

47(42.3)

20(45.5)

 

43(48.9)

20(45.5)

 

 IV

60(54.1)

18(40.9)

 

41(46.6)

18(40.9)

 

NP dose (Gy)

  

0.725

  

0.704

 Mean

71.03

71.23

 

71.00

71.23

 

 SD

3.07

3.48

 

3.11

3.48

 

LN dose (Gy)

  

0.054

  

0.230

 Mean

61.87

59.83

 

61.21

59.83

 

 SD

5.79

6.26

 

6.13

6.26

 

RT days

  

0.390

  

0.428

 Mean

45.16

47.25

 

48.53

47.25

 

 SD

8.79

8.32

 

8.95

8.32

 

CNI (%)

  

0.037

  

0.245

 Present

23(20.7)

3(6.8)

 

12(13.6)

3(6.8)

 

 Absent

88(79.3)

41(93.2)

 

76(86.4)

41(93.2)

 

BBI (%)

  

0.387

  

0.458

 Present

47(42.3)

22(50.0)

 

38(43.2)

22(50.0)

 

 Absent

64(57.7)

22(50.0)

 

50(56.8)

22(50.0)

 

Family history (%)

  

0.632

  

0.907

 Present

6(5.4)

4(9.1)

 

6(6.8)

4(9.1)

 

 Absent

105(94.6)

40(90.9)

 

82(93.2)

40(90.9)

 
  1. IC + RT induction chemotherapy followed by radiotherapy, CCRT concurrent chemoradiotherapy, NP nasopharynx, LN lymph node, CNI Cranial nerve involvement, BBI Basicranial Bone involvement, SD standard deviation