Case Control Study
Copyright ©The Author(s) 2019.
World J Gastroenterol. Dec 14, 2019; 25(46): 6728-6742
Published online Dec 14, 2019. doi: 10.3748/wjg.v25.i46.6728
Table 4 Assignment in Cox regression analysis
FactorsVariablesAssignment
GenderX1Male = 1, female = 2
Age (yr)X2< 60 = 1, ≥ 60 = 2
Tumor size (cm)X3< 2 = 1, ≥ 2 = 2
T stagingX4T1/T2 = 1, T3 = 2
N stagingX5N0 = 1, N1 = 2
M stagingX6M0 = 1, M1 = 2
DifferentiationX7High/medium = 1, low = 2
Nerve involvementX8No = 1, yes = 2
Vascular invasionX9No = 1, yes = 2
Smoking historyX10No = 1, yes = 2
History of alcoholismX11No = 1, yes = 2
HULCX12< 4.661 = 1, ≥ 4.661 = 2