Table 3. Multivariate analysis of CIA.

Variable	OR	95% CI	P-value of CIA
Age(>40 y vs. ≤40 y)	16.10	6.34–40.88	<0.001
Chemotherapy regimen
FEC	1.0	Reference
sequential-ECT	0.30	0.08–1.14	0.077
FEC-T	0.83	0.36–1.93	0.670
concurrent-ECT	1.29	0.23–7.20	0.770
Childbearing(≥2 vs.1 vs.0)	3.17	1.06–9.47	0.038
Tamoxifen use(yes vs. no)	1.21	0.54–2.74	0.647

OR, odds ratio; CI, confidence interval.