Effect on survey return rates of having a signed or unsigned postcard as the third-wave mailing.
This study assessed differences in response rates to a three-wave mail survey when signed or unsigned postcards were the third wave of the mailing (after two mailings of the questionnaire). A total of 259 signed postcards and 259 unsigned postcards were mailed as the third-wave mailing. There were 34 signed postcards and 30 unsigned postcards returned, a not significantly different distribution by chi-square test.
Price
James H
JH
Department of Public Health, University of Toledo, OH 43606, USA.
Dake
Joseph A
JA
Akpanudo
Sutoidem
S
Kleinfelder
Joann
J
D006801:Humans; D011177:Postal Service; D012107:Research Design; D011795:Surveys and Questionnaires