. Author manuscript; available in PMC: 2015 Dec 1.

Published in final edited form as: Breast Cancer Res Treat. 2014 Nov 16;148(3):645–654. doi: 10.1007/s10549-014-3204-3

Table 3.

Adjusted odds ratios and 95 % confidence intervals from logistic regressions on early stages at BC diagnosis for persistence with mammography screening among users only SEER-medicare 2005–2009 case

Variables	In situ stage			Local stage			Regional stage
Variables	AOR	95 % CI	Sig	AOR	95 % CI	Sig	AOR	95 % CI	Sig
Persistence with mammography screening
Persistent users	3.21	(2.69, 3.83)	^***	2.32	(1.96, 2.75)	^***	1.56	(1.31, 1.86)	^***
Non-persistent users	1			1			1

Based on 28,130 BC cases who had at least one mammography screening in the study period. BC Breast Cancer; AOR Adjusted odds ratio; CI Confidence interval; Sig Significance. The regressions also include intercept terms and parameter estimates for other variable controlled are not presented. “Distant stage at breast cancer diagnosis” is the reference group for the dependent variable

Asterisks represent statistically significant group differences compared with the reference group:

^***

P < 0.001;

^**

001 ≤ P < 0.01;

0.01 ≤ P < 0.05

Bold values represent the reference group within each variable