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アブストラクト(34巻1号:The Bulletin of Kanagawa Dental College)
English
Title : | Good Studies of Prognosis |
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Subtitle : | BKDC CLINICAL AND RESEARCH TOPICS : Evidence-based Medicine and Dentistry |
Authors : | Yoshiyuki Sasaki |
Authors(kana) : | |
Organization : | Center for Education and Research in Oral Health Care, Faculty of Dentistry, Tokyo Medical and Dental University |
Journal : | The Bulletin of Kanagawa Dental College |
Volume : | 34 |
Number : | 1 |
Page : | 41-45 |
Year/Month : | 2006 / 3 |
Article : | Report |
Publisher : | Kanagawa Odontological Society |
Abstract : | [Points to be appraised] 1. Is it considered that bias does not occur? 2. Is the considerable confounding factor measured and adjusted? 3. Does the result factor lead to a true outcome rather than a surrogate outcome? 4. In a process of causal inference, is a distinction being made as to whether the exposure factor is a factor or a marker? 5. Is the generalizability of an available result high? In an observational study, a cohort study is the most suitable study design to obtain evidence helpful in making prognoses. A cohort study designed adequately is performed using the following procedures. Exposure factors are measured after selecting subjects (cohort) from the population. The outcome factors are measured after a fixed time course. In other words, a cohort study is a longitudinal section study that prescribes a target population in the exposure of a factor, and exposure factors are measured before the occurrence of outcome factors. In a cohort study of a classic design, it is common to include a control group. However, a dental disease makes ends meet with a "web of causation" of multifactor. It is difficult to form groups using a combination of each factor in such a disease. Therefore a multivariate analysis is performed from data of plural exposure factors without making a control group. |
Practice : | Dentistry |
Keywords : |