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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