Who does not participate in a follow-up postal study? a survey of infertile couples treated by in vitro fertilization
<p>Abstract</p> <p>Background</p> <p>A good response rate has been considered as a proof of a study’s quality. Decreasing participation and its potential impact on the internal validity of the study are of growing interest. Our objective was to assess factors associated...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
BMC
2012-07-01
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| Series: | BMC Medical Research Methodology |
| Subjects: | |
| Online Access: | http://www.biomedcentral.com/1471-2288/12/104 |