Participant characteristics associated with withdrawal from a large randomized trial of spermicide effectiveness
<p>Abstract</p> <p>Background</p> <p>In most recent large efficacy trials of barrier contraceptive methods, a high proportion of participants withdrew before the intended end of follow-up. The objective of this analysis was to explore characteristics of participants who...
Main Authors: | , , , , , , , , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
BMC
2004-10-01
|
Series: | BMC Medical Research Methodology |
Online Access: | http://www.biomedcentral.com/1471-2288/4/23 |