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Table 1 Patient characteristics

From: The mutation rates of EGFR in non-small cell lung cancer and KRAS in colorectal cancer of Chinese patients as detected by pyrosequencing using a novel dispensation order

Variable Number (%) Variable Number (%)
NSCLC 494 (100) CRC 1099 (100)
Age (years)   Age (years)  
 Mean 64.70  Mean 60.95
 Range 38–85  Range 36–82
Gender   Gender  
 Male 334 (67.61)  Male 657 (59.78)
 Female 160 (32.39)  Female 442 (40.22)
Smoking history   Sublocalization  
 Ever smoker 348 (70.45)  Proximal colon 373 (33.94)
 Never smoker 146 (29.55)  Distal colon 355 (32.30)
Pathological stage    Rectum 371 (33.76)
 I 96 (19.43) Dukes’ stage  
 II 75 (15.18)  A 97 (8.83)
 III 132 (26.72)  B 517 (47.04)
 IV 185 (37.45)  C 343 (31.21)
 Unknown 6 (1.21)  D 142 (12.28)
Pathology   Pathology  
 ADC 310 (62.75)  ADC 1045 (95.09)
 SCC 172 (34.82)  SCC 21 (1.91)
 LCC 6 (1.21)  ASC 9 (0.82)
 ASC 4 (0.81)  UDC 18 (1.64)
 Others 2 (0.40)  Others 6 (0.55)
Differentiation   Differentiation  
 Poor 97 (19.64)  Poor 256 (23.29)
 Moderate 249 (50.40)  Moderate 752 (68.43)
 Well 145 (29.35)  Well 78 (7.10)
 Unknown 3 (0.61)  Unknown 13 (1.18)
  1. NSCLC non-small cell lung cancer, CRC colorectal cancer, ADC adenocarcinoma, SCC squamous cell carcinoma, LCC large cell carcinoma, ASC adenosquamous carcinoma, UDC undifferentiated carcinoma