翻訳と辞書 Words near each other ・ Case of Trotskyist Anti-Soviet Military Organization ・ Case of Wijikala Nanthan and Sivamani Sinnathamby Weerakon ・ Case Ootes ・ Case or Controversy Clause ・ Case presentation ・ Case preservation ・ Case report ・ Case report form ・ Case role ・ Case Scenario ・ Case School of Dental Medicine ・ Case School of Engineering ・ Case sealer ・ Case Sensitive (TV series) ・ Case sensitivity ・ Case series ・ Case stated ・ Case study ・ Case Study House No. 28 ・ Case Study Houses ・ Case study in psychology ・ Case STX Steiger ・ Case Township, Michigan ・ CASE Ukraine ・ Case Unclosed ・ Case v. Minot ・ Case Vanderwolf ・ Case variants of IPA letters ・ Case Western Reserve Journal of International Law ・ Case Western Reserve Spartans football Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Case series ： ウィキペディア英語版 Case series A case series (also known as a clinical series) is a type of medical research study that tracks subjects with a known exposure, such as patients who have received a similar treatment, or examines their medical records for exposure and outcome. Case series may be ''consecutive'' or ''non-consecutive'', depending on whether all cases presenting to the reporting authors over a period were included, or only a selection. Case series have a descriptive study design; unlike studies that employ an analytic design (e.g. cohort studies, case-control studies or randomized controlled trials), case series do not, in themselves, involve hypothesis testing to look for evidence of cause and effect (though case-only analyses are sometimes performed in genetic epidemiology to investigate the association between an exposure and a genotype). Case series are especially vulnerable to selection bias; for example, studies that report on a series of patients with a certain illness and/or a suspected linked exposure draw their patients from a particular population (such as a hospital or clinic) which may not appropriately represent the wider population. Internal validity of case series studies is usually very low, due to the lack of a comparator group exposed to the same array of intervening variables. For example, the effects seen may be wholly or partly due to intervening effects such as the placebo effect, Hawthorne effect, Rosenthal effect, time effects, practice effects or the natural history effect. Calculating the difference in effects between two treatment groups assumed to be exposed to a very similar array of such intervening effects allows the effects of these intervening variables to cancel out. Hence only the presence of a comparator group, which is not a feature of case-series studies, will allow a valid estimate of the true treatment effect ==See also== *Case report 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Case series」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.