Table 4.

Comparison of HMO Statistics with Published National Survey Statistics on Percentage of Women Aged ≥ 40 Years Who Had At Least One Mammogram

			Women with Mammography Screening, %
Source*	Time Period	Type of Data	African American	White	Absolute Difference Between Races
HMO study cohort (n = 2,072)	1983–1987	Utilization	69	78	9
NHIS*(n = 6,858)	Through Dec. 1987	Self-report	30	39	9
HMO study cohort (n = 2,072)	1983–1990	Utilization	84	90	6
NKAB†(n = 836)	Through Feb. 1990	Self-report	59	69	10
MAUS‡(n = 980)	Through Feb. 1990	Self-report	58	65	7

^*National Health Interview Survey (NHIS), 1987.

^†National Knowledge, Attitudes and Behavior Survey, April 1989 to February 1990.

^‡Mammography Attitudes and Usage Study, February 1990.