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. 2009 Mar 10;100(7):1048–1054. doi: 10.1038/sj.bjc.6604968

Table 4. Mastectomy option influencing factors: multiple logistic regression analysis by stepwise procedure.

Variable WALD value χ2 P-value OR IC 95%
Tumour size (mm) 187 <0.0001 1.088 1.075–1.1
Age (years) 9.09 0.0026 0.975 0.96–0.99
Low grade 6.94 0.0084 0.497 0.29–0.83

Abbreviation: OR=odds ratio.