Changes in initiation of adjuvant endocrine therapy for breast cancer after state health reform

BMC Cancer

Table 1 Characteristics of the study population before and after Massachusetts health reform

	All ZIP code areas in Massachusetts		ZIP code areas below state median household income^a		ZIP code areas above state median household income^a
	Pre-reform	Post-reform	Pre-reform	Post-reform	Pre-reform	Post-reform
N	6539	14,174	2839	6159	3656	7897
Adjuvant Endocrine Therapy	70.99	77.23	67.35	76.15	73.85	78.00
Stage at diagnosis^b
0	24.64	24.90	23.14	25.09	25.68	24.78
I	44.49	45.81	44.03	44.94	45.08	46.41
II	23.61	23.07	24.48	23.28	22.01	22.95
III	7.26	6.22	8.35	6.69	6.43	5.86
Type of Surgery
BCS	73.93	71.89	73.09	72.74	74.07	71.15
Mastectomy with RC	9.93	17.13	8.45	14.97	11.18	18.87
Mastectomy without RC	16.15	10.98	17.86	12.29	14.85	9.98
Hormone Receptor Status
Both ER and PR Positive	84.98	86.84	85.07	86.59	84.96	87.01
ER Positive only	15.02	13.16	14.93	13.41	15.04	12.99
Demographic Information
Age < 40	6.35	6.03	7.20	6.67	5.58	5.57
Age 40–49	34.52	31.66	31.77	29.49	36.65	33.43
Age 50–54	20.20	20.69	20.36	19.58	20.13	21.63
Age 55–59	19.97	19.92	20.43	21.58	19.64	18.59
Age 60–64	18.96	21.69	20.15	22.68	18.00	20.78
Married	64.73	64.05	56.43	55.76	71.20	70.63
Non-Hispanic White	89.88	86.91	84.04	79.12	94.42	92.91
Non-Hispanic Black	3.38	4.54	6.23	8.39	1.18	1.56
Non-Hispanic Other Race	2.95	4.30	2.71	4.51	3.12	4.18
Hispanic	3.79	4.25	7.01	7.97	1.29	1.3

Pre-reform period is January 2003 – June 2007; Post-reform period is July 2007 – December 2013
AET Adjuvant Endocrine Therapy, AJCC American Joint Committee on Cancer, BCS Breast Conserving Surgery, RC Reconstruction, ER Estrogen Receptor, PR Progesterone Receptor
^aThe estimated median household income in MA was $68,293.37 in 2006
^bMeasured by derived AJCC Stage Group

ISSN: 1471-2407