Table 1.

All women having screening mammograms at the Aberdeen Area Women’s Mobile Health Unit (MWHU) during 2007–2009

	Mean (SD)	Range
Age (years)	53.27 (10.44)	23–91
	N (number of women)	%
Age group (years)
<41	186	8.53
41–49a	723	36.39
50–64a	928	42.59
65+a	342	15.70
Previous mammogram?
Yes	1841	84.49
No	329	15.10
Unknown	9	0.41
Previously adherent to mammography guidelines?b
Yes	706	32.40
No	665	30.52
Uncertain	55	2.52
Without evidence of adherence	402	18.45
Not applicable (age <41 years)	186	8.53
Not applicable (ages 41+ with last prior screening at MWHU 2006)	165	7.57
Clinic site (2007–2009)
Belcourt	254	11.66
Fort Yates	184	8.44
Fort Thompson	166	7.62
Wagner	154	7.07
Winnebago	148	6.79
Trenton	133	6.10
Eagle Butte	128	5.87
Macy	120	5.51
Wanblee	117	5.37
New Town	117	5.37
McLaughlin	116	5.32
Kyle	108	4.96
Pierre	107	4.91
Flandreau	86	3.95
Lower Brule	83	3.81
Tama	76	3.49
Aberdeen	54	2.48
Niobrara	26	1.19
Unknown	2	0.09

N = 2,179

^aAge group recommended for screening mammography

^bAdherence defined as reporting last previous mammogram 1–2 years prior for women ages 41+ years, based on U.S. Preventative Services Task Force Guidelines effective during study period years