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. 2016 May 12;31(8):1224–1230. doi: 10.3346/jkms.2016.31.8.1224

Table 1-2. Patients demographics with KRAS mutation (n = 323 for KRAS).

Demographic parameters KRAS Mu
n = 28
KRAS WT
n = 295
Total
n = 323
P value
Age, yr (range) 65.96 (43-85) 65.50 (25-88) 65.60 (25-88)
Sex (M:F)
 Male 22 (78.57) 199 (67.45) 221 (68.42)
 Female 6 (21.43) 96 (32.55) 102 (31.58)
Smoking history < 0.001
 Current 10 112 122
 Ex-smoker 9 75 84
 Non-smoker 4 108 112
 Unknown 5 0 5
Smoker 19 (67.85) 187 (63.38) 206 (63.77)
Non-smoker 9 (32.15) 108 (36.62) 117 (36.23)
Diagnostic tool
 Cytology (%) 4 (8.34) 44 (91.66) 48 (14.86)
 Biopsy (%) 21 (9.30) 205 (90.70) 226 (69.96)
 Resection (%) 3 (6.63) 46 (93.87) 49 (15.18)
Cytology (%) 4 (8.34) 44 (91.66) 48 (14.86)
Non-cytology (%) 24 (8.73) 251 (91.27) 275 (85.14)