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Radiography as primary outcome in rheumatoid arthritis: acceptable sample sizes for trials with 3 months' follow up
Objectives: To investigate whether plain radiographs can show changes in joint damage due to rheumatoid arthritis (RA) within 3 months. Methods: 188 film pairs taken with a 3 month interval were evaluated. They were scored with (chronological) and without (paired) knowledge of the sequence of the fi...
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| Main Authors: | , , , |
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| Formato: | Artigo |
| Idioma: | Inglês |
| Publicado em: |
2004
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| Assuntos: | |
| Acesso em linha: | https://ncbi.nlm.nih.gov/pmc/articles/PMC1754812/ https://ncbi.nlm.nih.gov/pubmed/15037445 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1136/ard.2003.014043 |
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