The fading of reported effectiveness. A meta-analysis of randomised controlled trials
<p>Abstract</p> <p>Background</p> <p>The "real" effect size of a medical therapy is constant over time. In contrast, the effect size reported in randomised controlled trials (RCTs) may change over time because the sum of all kinds of bias influencing the repor...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
BMC
2006-05-01
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| Series: | BMC Medical Research Methodology |
| Online Access: | http://www.biomedcentral.com/1471-2288/6/25 |