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Table 4 Comparison of risk factors calculated using the univariate logistic analysis, multivariable logistic analysis and Bootstrap for variables.

From: A model building exercise of mortality risk for Taiwanese women with breast cancer

  Univariate logistic analysis Multivariate logistic analysis Bootstrap for Variables in the Equation
Factors Odds Ratio 95% CI P-value Odds Ratio 95% CI P-value Std. Error 95% CI P-value
Age (years)          
   36-60 (a) 2.646 (c v.s. a) (1.232, 5.650) 0.002 3.937 (c v.s. a) (1.403, 11.111) 0.003 0.892 (0.945, 12.195) 0.013
   61-85 (b) 1.342 (c.v.s. b) (0.579, 3.115)   1.548 (c v.s. b) (0.492, 4.878)   0.924 (0.370, 5.348)  
   20-35 (c)          
Ultrasound          
M 3.584 (2.088, 6.173) <0.0001 1.977 (1.545, 4.367) <0.0001 0.471 (1.023, 4.993) 0.111
N, B, I, S          
Mammography          
BR5 3.717 (1.898, 7.299) 0.0001 3.058 (1.049, 8.929) 0.048 1.315 (1.121, 1.530) 0.028
BR1-4          
Diagnostic method          
Others 2.331 (1.422, 3.846) 0.001 2.519 (1.172, 5.410) 0.028 0.427 (1.119, 6.303) 0.016
Core biopsy          
Tumor grade          
III 2.172 (1.486, 3.176) <0.0001 1.671 (1.215, 2.829) 0.01 0.322 (0.966, 3.347) 0.075
II          
I          
Lymph node          
N3 4.053 (2.850, 5.755) <0.0001 3.037 (1.808, 5.104) <0.0001 0.335 (1.624, 6.221) 0.001
N1 or N2          
N0          
ER/PR          
(-, -), (-, +), (+, -) 1.99 (1.194, 3.331) 0.009 2.778 (1.231, 6.260) 0.045 0.451 (1.306, 7.996) 0.011
(+, +)          
Chemotherapy          
Yes (a) 2.558 (c v.s. a) (1.263, 5.155) <0.0001 4.348 (1.631, 11.494) 0.002 0.852 (1.339, 13.514) 0.003
No (b) 16.393 (c v.s. b) (5.051, 52.632)   12.658 (2.558, 62.5)   3.761 (18.868, 2.87*109)  
Abandonment or Refusal (c)          
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