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

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
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)