Using direct mail to recruit hispanic adults into a dietary intervention: An experimental study
- 124 Downloads
Identifying strategies for successful recruitment of ethnic minorities into scientific studies is critical. Without effective methods, investigators may fail to recruit the desired sample size, take longer to recruit than planned, and delay progress for research in minority health. Direct mail is an appealing recruitment method because of the potential for reaching large target populations and producing a high volume of inquiries about a study with relatively little staff effort. To determine which of three direct mail strategies yielded higher recruitment, 561 Hispanic employees were randomly assigned to receive either: (a) a flyer about a worksite dietary intervention; (b) the same flyer plus a personalized hand-signed letter containing heart disease risk statistics for the general American population; or (c) the flyer plus a personalized hand-signed letter containing statistics for Hispanics. Two orthogonal chi-square comparisons were examined. The personalized letters plus flyer yielded a significantly higher response rate (7.8%) than the flyer alone (2.1%), X2(1, N=561)=7.5, p=.006. However, the personalized letter with Hispanic heart disease risk statistics did not yield a statistically significant higher response rate (9.1%) than the letter with the general population risk statistics (6.5%), X2(1, N=370)=0.9, p>.34. These findings suggest that personalized approaches can increase the effectiveness of direct mail efforts for recruiting ethnic minorities into interventions and may be particularly helpful for large-scale interventions.
Unable to display preview. Download preview PDF.
- (4).National Institutes of Health, Public Health Service, Department of Health and Human Services: NIH Guidelines On the Inclusion of Women and Minorities As Subjects in Clinical Research.Federal Register 59(28 March 1994):14508–14513.Google Scholar
- (7).National Institute for Occupational Safety and Health:National Occupational Research Agenda: Update July, 1997, DHHS Publication No. NIOSH 97-138. Cincinnati, OH: National Institute for Occupational Safety and Health, 1997.Google Scholar
- (23).Erdos PL:Professional Mail Surveys. Malabar, FL: Robert E. Krieger Publishing Company, Inc., 1983.Google Scholar
- (24).Dillman DA:Mail and Telephone Surveys: The Total Design Method. New York: John Wiley and Sons, Inc., 1978.Google Scholar
- (29).Erfurt JC, Foote A, Heirich MA, Gregg W: Improving participation in worksite wellness programs: Comparing health education classes, a menu approach, and follow-up counseling.American Journal of Health Promotion. 1990,4:270–278.Google Scholar
- (31).Winkleby MA, Kraemer HC, Ahn DK, Varady AN: Ethnic and socioeconomic differences in cardiovascular disease risk factors: Findings for women from the Third National Health and Nutrition Examination Survey, 1988–1994.Journal of the American Medical Association. 1998,280:356–362.PubMedCrossRefGoogle Scholar
- (32).American Heart Association:Heart and Stroke Facts: 1995 Statistical Supplement. Dallas, TX: American Heart Association, 1994.Google Scholar
- (35).Kelsey JL, Whittemore AS, Evans AS, Thompson WD:Methods in Observational Epidemiology (2nd Ed.). New York: Oxford University Press, 1996.Google Scholar