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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