Table 2.

Univariate and multivariate Cox proportional hazards regression models for progression free survival

	Univariate		Multivariate
	HR (95% CI)	P-value	HR (95% CI)	P-value
D Group, B Group	0.97 (0.64, 1.46)	0.879	1.11 (0.72, 1.72)	0.628
Age (≥ 65, < 65 years)	0.97 (0.64, 1.46)	0.874	1.04 (0.66, 1.66)	0.862
Use of BMA, No use	1.26 (0.84, 1.89)	0.255	1.71 (1.06, 2.77)	0.028
Chemotherapy, No use	1.03 (0.55, 1.93)	0.930	1.19 (0.60, 2.37)	0.618
BMI ≥ 25, < 25	1.85 (1.16, 2.96)	0.010	1.84 (1.11, 3.04)	0.018
PgR+, −	1.02 (0.60, 1.72)	0.952	0.70 (0.38, 1.29)	0.257
Visceral, No visceral	1.98 (1.27, 3.08)	0.002	2.13 (1.31, 3.49)	0.003
Metastatic, De novo	1.05 (0.65, 1.69)	0.855	0.87 (0.49, 1.54)	0.625
Endocrine therapy 2, 0–1	1.34 (0.80, 2.22)	0.265	1.13 (0.60, 2.13)	0.701
Endocrine therapy 3, 0–1	1.22 (0.76, 1.96)	0.409	0.95 (0.56, 1.62)	0.856
Incidence of oral mucositis within 8 weeks, None	1.19 (0.69, 2.04)	0.536	1.41 (0.78, 2.57)	0.260