Evaluation of an intervention to increase mammography screening in Los Angeles

Prev Med. 1994 Jan;23(1):83-90. doi: 10.1006/pmed.1994.1012.


METHODS. A randomized pretest post-test control group design was used to evaluate the effectiveness of a mail-out intervention for increasing screening mammography rates. A random sample of 802 women, 40+, residing in Los Angeles County, was surveyed by telephone at baseline and again 12 months after the intervention. RESULTS. Fifty percent of the intervention group and 56% of the control group had obtained a screening mammogram during the follow-up period. This difference was not statistically significant, indicating that the low-cost intervention was not successful in influencing screening mammography rates in this sample. In the combined intervention and control group, a stepwise logistic regression analysis revealed four baseline variables to be significant prospective predictors of mammography behavior during the follow-up period: Women who were adherent to the age-specific screening guidelines at baseline and women who had health insurance were more likely to obtain a mammogram during the follow-up, as were older women. Also, women who were greatly concerned about radiation exposure during a mammogram were about two and a half times less likely to obtain a mammogram during the follow-up than women who were less concerned. Self-reported reasons for adherence and nonadherence to screening guidelines are also described.

Publication types

  • Clinical Trial
  • Randomized Controlled Trial

MeSH terms

  • Adult
  • Age Factors
  • Aged
  • Attitude to Health
  • Breast Neoplasms / diagnostic imaging*
  • Breast Neoplasms / epidemiology
  • Breast Neoplasms / prevention & control*
  • Clinical Protocols
  • Fear
  • Female
  • Follow-Up Studies
  • Health Behavior*
  • Health Care Costs
  • Health Promotion / organization & administration*
  • Humans
  • Insurance, Health
  • Logistic Models
  • Los Angeles / epidemiology
  • Mammography / adverse effects
  • Mammography / economics
  • Mammography / psychology
  • Mammography / statistics & numerical data*
  • Mass Screening / adverse effects
  • Mass Screening / economics
  • Mass Screening / psychology
  • Mass Screening / statistics & numerical data*
  • Middle Aged
  • Patient Compliance
  • Program Evaluation