Breast Cancer Survival and Incidence: 10 Years Cancer Registry Data in the Northwest, Iran

Table 2

Cox regression analysis of follow-up data of breast cancer patients in Northwest of Iran, between 2007 and 2016.

Variable		Univariate Cox regression					Multivariate Cox regression
		Freq. (percent)	HR	95% CI		value	HR	95% CI		value
Age	<50	658 (49.3)	Ref.	—	—	—	Ref.	—	—	—
	≥50	677 (50.7)	1.26	0.98	1.61	0.070	1.28	1.00	1.64	0.050
Sex	Female	1309 (98.1)	Ref.	—	—	—	Ref.	—	—	—
	Male	26 (1.9)	1.42	0.70	2.88	0.325	1.34	0.66	2.73	0.414
Grade	I	232 (17.4)	Ref.	—	—	—	Ref.	—	—
	II	511 (38.3)	1.52	0.98	2.34	0.059	1.55	1.00	2.40	0.048
	III	86 (6.4)	2.53	1.47	4.36	0.001	2.57	1.49	4.44	0.001
	Unknown	506 (37.9)	1.93	1.28	2.91	0.002	1.98	1.27	3.07	0.002
						0.001
Morphology	DC	1036 (77.6)	Ref.	—	—	—	Ref.	—	—	—
	LC	81 (6.1)	0.86	0.50	1.49	0.598	0.73	0.42	1.306	0.288
	Others	73 (5.5)	0.86	0.54	1.37	0.522	0.70	0.43	1.15	0.163
	NOS	145 (10.9)	1.63	1.16	2.29	0.005	1.36	0.92	1.99	0.119
						0.032				0.001

Unadjusted Hazard Ratio; Adjusted Hazard Ratio; Total Value. HR: hazard ratio; CI: confidence interval.