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Table 2 Baseline characteristics of patients (cases) and healthy (control) groups and tumor features

From: Association of SMAD7 genetic markers and haplotypes with colorectal cancer risk

Characteristic Cases Controls p-value OR (95%CI)
Gender     
 Female 95(45.5%) 100(50%) Ref  
 Male 114(54.5%) 100(50%) 0.358 0.83 (0.56–1.23)
Age of diagnosisa (year) 56.84 ± 13.6 57.35 ± 8.4 0.192 0.99 (0.97–1.01)
Smoking status     
 Positive 19(9.0%) 29(14.5%) Ref  
 Negative 156(74.6%) 171(85.5%) 0.179 0.65 (0.35–1.21)
Family history     
 Positive 35(16.7%) 40(20.0%) Ref  
 Negative 131(62.6%) 160(80.0%) 0.321 0.78 (0.48–1.27)
BMI (Kg/m2)b 25.5 ± 4.8 27.8 ± 4.9  < 0.001 0.90 (0.86–0.95)
Tumor location     
 Rectum 75 (35.8)    
 Colon 59 (28.2)    
 Sigmoid 43 (20.5)    
Grade     
 Poor 65 (31.1)    
 Moderate 89 (42.5)    
 Well 23 (11.0)    
  1. All statistically significant P-values are shown in bold
  2. aMean ± SD
  3. bBody Mass Index