To send or not to send: weighing the costs and benefits of mailing an advance letter to participants before a telephone survey
Abstract Objective A letter was mailed to half the participants (Letter = 137; No Letter = 138) of a 5-year follow-up survey regarding smoking cessation before attempting contact for a telephone interview. The primary outcome was the number of completed surveys per group (response rate). Secondary a...
Main Authors: | , , , |
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Format: | Article |
Language: | English |
Published: |
BMC
2018-11-01
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Series: | BMC Research Notes |
Subjects: | |
Online Access: | http://link.springer.com/article/10.1186/s13104-018-3920-6 |