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Bias due to incomplete follow up in a cohort study
AIM—To investigate the bias introduced by incomplete follow up in a cohort study of ocular outcome after premature birth. METHODS—A geographically defined cohort of children born before 32 weeks' gestation was prospectively recruited at birth to study the ocular outcome at 2 years. On the basis...
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| Main Authors: | , , , , , |
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| 格式: | Artigo |
| 語言: | Inglês |
| 出版: |
1999
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| 主題: | |
| 在線閱讀: | https://ncbi.nlm.nih.gov/pmc/articles/PMC1723091/ https://ncbi.nlm.nih.gov/pubmed/10340968 |
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