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Table 1 Clinicopathological characteristics of the patients in the study and validation groups

From: Oral tongue cancer gene expression profiling: Identification of novel potential prognosticators by oligonucleotide microarray analysis

Parameter Study (Array) Validation
  All samples TN paired RT-PCR
  NUMBER %
Total 37 20 49
Age (yrs)    
   Median (Range) 57 (36–97) 62 (35–97) 59 (35–97)
Gender    
   Male 22 (59.5) 12 (60) 26 (53)
   Female 15 (40.5) 8 (40) 23 (47)
Therapy prior to surgery    
   None 22 (59.5) 12 (60.0) 34 (69.4)
   Yes 15 (40.5) 8 (40.0) 15 (30.6)
Smoking history    
   Yes 19 (51.4) 11 (55.0) 30 (61.2)
   No 18 (48.6) 9 (45.0) 19 (38.8)
Alcohol history    
   Yes 14 (37.9) 8 (40.0) 20 (40.8)
   No 23 (62.1) 12 (60.0) 26 (59.2)
   Unknown 0 0 3
Histological grading    
   Well-differentiated 6 (16.2) 3 (15) 9 (18)
   Mod-differentiated 24 (64.9) 13 (65) 32 (65)
   Poorly-differentiated 7 (18.9) 4 (20) 8 (16)
   Unknown 0 0 0
Lymph node involvement (Pathologic)    
   Negative 26 (70.2) 13 (65) 25 (51)
   Positive 11 (29.8) 7 (35) 24 (49)
   Unknown 0 0 0
TNM Stage (Pathologic)    
   I 8 (21.6) 4 (20) 11 (22)
   II 12 (32.4) 6 (30) 12 (25)
   III 3 (8.1) 3 (15) 7 (14)
   IV 14 (37.9) 7 (35) 19 (39)
   Unknown 0 0 0