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Table 3 Association between clinical characteristics and DFI in 246 NPC patients with lung metastasis(es) alone at diagnosis or the first failure.

From: Factors determining the survival of nasopharyngeal carcinoma with lung metastasis alone: does combined modality treatment benefit?

  Disease-free interval
Characteristics ≤ 1 year 1-3 years ≥ 3 years P a
Age (years)     0.018
   ≤ 45 39 (30.0) 47 (36.2) 44 (33.8)  
   > 45 53 (45.7) 39 (33.6) 24 (20.7)  
Gender     0.701
   Male 75 (38.3) 66 (33.6) 55 (28.1)  
   Female 17 (34.0) 20 (40.0) 13 (26.0)  
EBV VCA-lgAb     0.624
   ≤ 320:1c 35 (35.0) 37 (37.0) 28 (28.0)  
   >320:1 30 (42.9) 22 (31.4) 18 (25.7)  
EBV EA-lgAb     0.826
   ≤ 40:1d 42 (37.5) 38 (33.9) 32 (28.6)  
   > 40:1 23 (39.7) 21 (36.2) 14 (24.1)  
UICC T classification     0.001
   T1-2 25 (25.8) 33 (34.0) 39 (40.2)  
   T3-4 67 (45.0) 53 (35.5) 29 (19.5)  
UICC N classification     0.012
   N0 10 (24.4) 12 (29.3) 19 (46.3)  
   N1-3 82 (40.0) 74 (36.1) 49 (23.9)  
  1. Abbreviation: NPC, nasopharyngeal carcinoma; DFI, disease-free interval; UICC, International Union Against Cancer.
  2. aChi-square test;
  3. b Data was available for 170 cases;
  4. cMedian EBV VCA lgA;
  5. d Median EBV EA lgA.