Use of voter registration records to recruit a representative sample.
Research samples are not often compared to broader community samples to evaluate their representativeness, a critical factor in determining the generalizability of study findings. This study evaluated the use of voter-registration records for recruiting a representative sample of community-dwelling, older, and overweight participants for research on improving measures of diet and physical activity. County voter-registration records were used to identify individuals between 45 and 75 years of age and living in the two cities closest to the research lab. The data were collected from July, 2007 through November, 2008. Prospective participants were mailed an introductory letter and opt-out postcard, and received a follow-up recruitment phone call in which they underwent further screening if interested in participating. The representativeness of the final voter-recruited sample (N = 191) was evaluated by comparisons of demographic variables with Behavioral Risk Factor Surveillance System (BRFSS) data at the county and state levels. The voter-recruited sample was only partially comparable to that of the BRFSS sample, with expected differences in variables related to race/ethnicity, the proportion of women, employment status, and educational attainment. Voter-registration records are a relatively low-cost ($75 per participant) method of recruiting a community sample that avoids some biases of other recruitment methods, but may not achieve a fully representative sample.
Oregon Research Institute, Eugene, OR 97403-1983, USA. erikaw@ori.org
Erika H
EH
Westling
Sarah E
SE
Hampson
Lisa A
LA
Strycker
Deborah J
DJ
Toobert
D000368:Aged; D040343:Behavioral Risk Factor Surveillance System; D005260:Female; D006306:Health Surveys / Q000379:methods*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009043:Motor Activity; D009765:Obesity / Q000178:diet therapy / Q000453:epidemiology*; D018579:Patient Selection; D011057:Politics; D012042:Registries; D012107:Research Design; D012494:Sampling Studies; D014481:United States / Q000453:epidemiology
Ann Behav Med. 2006 Apr;31(2):105-8
16542124
Pediatr Diabetes. 2000 Mar;1(1):17-22
15016238
Am J Health Behav. 2010 Jul-Aug;34(4):432-41
20218755
Prev Med. 2008 Oct;47(4):398-401
18675295
J Gerontol A Biol Sci Med Sci. 1998 Jan;53(1):M39-46
9467432
Med Sci Sports Exerc. 2001 Jul;33(7):1126-41
11445760
Ann Behav Med. 2005 Apr;29 Suppl:66-75
15921491
Am J Public Health. 1999 Sep;89(9):1322-7
10474547
Ann Behav Med. 2004 Feb;27(1):3-12
14979858
J Community Health. 2005 Aug;30(4):281-97
15989210
Int Urol Nephrol. 2006;38(2):255-61
16868693
Control Clin Trials. 1999 Apr;20(2):133-48
10227414
Alcohol Alcohol. 2006 May-Jun;41(3):349-52
16551752
J Am Diet Assoc. 2002 Dec;102(12):1764-72
12487538
J Am Geriatr Soc. 2007 May;55(5):674-83
17493186
Fertil Steril. 2000 Apr;73(4):724-9
10731532
Am J Health Behav. 2006 Nov-Dec;30(6):626-35
17096620
Patient Educ Couns. 2002 Oct -Nov;48(2):99-105
12401412
Diabetes Educ. 1991 Sep-Oct;17(5):376-80
1879279
Patient Educ Couns. 2002 Oct -Nov;48(2):97
12401411