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

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

  All ZIP code areas in Massachusetts ZIP code areas below state median household incomea ZIP code areas above state median household incomea
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 diagnosisb
 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
  1. Pre-reform period is January 2003 – June 2007; Post-reform period is July 2007 – December 2013
  2. AET Adjuvant Endocrine Therapy, AJCC American Joint Committee on Cancer, BCS Breast Conserving Surgery, RC Reconstruction, ER Estrogen Receptor, PR Progesterone Receptor
  3. aThe estimated median household income in MA was $68,293.37 in 2006
  4. bMeasured by derived AJCC Stage Group