The Influence of Response Mode on Study Results: Offering Cigarette Smokers a Choice of Postal or Online Completion of a Survey
BackgroundIt is unclear whether offering online data collection to study participants affects compliance or produces bias. ObjectiveTo compare response rates, baseline characteristics, test-retest reliability, and outcomes between cigarette smokers who chose to co...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
JMIR Publications
2010-10-01
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| Series: | Journal of Medical Internet Research |
| Online Access: | http://www.jmir.org/2010/4/e46/ |