Design and methods for a randomized clinical trial comparing three outreach efforts to improve screening mammography adherence

Effects of different reminder strategies on first-time mammography screening among women in Taiwan

Background

The study’s purpose was to examine the effectiveness of different reminder strategies on first-time free mammography screening among middle-aged women in Taiwan.

Methods

A quasi-experimental design with random assignment was adopted to divide the participants into three Reminder Strategies groups (mail reminder, telephone reminder, and combined mail and telephone reminders) and one control group. This study recruited 240 eligible middle-aged women, and 205 of them completed the study. Upon the completion of data collection, mail reminders were provided to women of the first group; telephone reminders were provided to the second group; mail followed by telephone reminders were provided to the third group, and the usual postcards were provided to the control group 1 month after the interventions. Two follow-up assessments were conducted 1 and 3 months after the intervention to collect mammography-screening behaviors from all groups.

Results

The findings showed that, compared to the control group, more participants in the intervention groups underwent mammography screening after receiving reminder interventions. Telephone contact as reminder was found to have the most significant influence among the interventions (OR = 5.0556; 95% CI = 2.0422–13.5722).

Conclusions

Government and healthcare providers are recommended to consider adopting the telephone reminder strategy to encourage women to undergo their first-time mammography screening.

Implementation and process evaluation of three interventions to promote screening mammograms delivered for 4 years in a large primary care population

The optimal form of outreach to promote repeated, on time screening mammograms in primary care has not been established. The purpose of this study is to assess the implementation process and process outcomes for three interventions for promoting biannual screening mammography in a randomized trial. In a large urban primary care practice over a 4-year period, we randomized women aged 40-85 and eligible for mammograms to three interventions: reminder letter only (LO), reminder letter + reminder call (RC), and reminder letter + counseling call (CC). We tracked information system development, staff training, patient and provider recruitment, reach, dose delivered and received, fidelity, and context measures. Ninety-three of 95 providers approved participation by 80% (23,999) of age-eligible patients, of whom only 207 (0.9%) opted not to receive any intervention. Of 9161 initial reminder letters mailed to women coming due or overdue for mammograms, 0.8% were undeliverable. Of women in the RC and CC arms unresponsive to the first reminder letter (n = 3982), 71.4% were called and reached, and of those, 49.1% scheduled a mammogram. Only 33.4% of women reached in the CC arm received full counseling, and women in the CC arm were less likely to schedule a mammogram than those in the RC arm. Implementing mail and telephone mammography reminders is feasible and acceptable in a large urban practice and reaches a majority of patients. Many schedule a mammogram when reached. A reminder letter followed by a simple reminder call if needed may be the optimal approach to promoting screening mammograms.