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Record Nr. |
UNISANNIOSBL0476998 |
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Autore |
Brandileone, Francesco |
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Titolo |
Il diritto romano nelle leggi normanne e sveve del regno di Sicilia / studio del dott. Francesco Brandileone ; con introduzione di Bartolommeo Capasso ; e col testo delle assise normanne nuovamente riscontrato sui manoscritti vaticano e cassinese |
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Pubbl/distr/stampa |
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Torino, : F.lli Bocca, 1884 |
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Descrizione fisica |
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Collana |
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Nuova collezione di opere giuridiche ; 21 |
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Disciplina |
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Soggetti |
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Collocazione |
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D (AR) 13 32601D (AR) 5 147 |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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2. |
Record Nr. |
UNINA9910966753603321 |
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Titolo |
Small clinical trials : issues and challenges / / Charles H. Evans, Jr. and Suzanne T. Ildstad, editors ; Committee on Strategies for Small-Number-Participant Clinical Research Trials, Board on Health Sciences Policy, Institute of Medicine |
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Pubbl/distr/stampa |
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Washington, D.C., : National Academy Press, c2001 |
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ISBN |
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9780309171144 |
0309171148 |
9780309513456 |
0309513456 |
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Edizione |
[1st ed.] |
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Descrizione fisica |
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1 online resource (221 p.) |
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Collana |
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Altri autori (Persone) |
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EvansCharles H <1940-> (Charles Hawes) |
IldstadSuzanne T |
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Disciplina |
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Soggetti |
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Clinical trials |
Clinical trials - United States |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Description based upon print version of record. |
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Nota di bibliografia |
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Includes bibliographical references (p. 177-200). |
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Nota di contenuto |
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""Front Matter""; ""Reviewers""; ""Preface""; ""Contents""; ""Executive Summary""; ""1 Introduction""; ""2 Design of Small Clinical Trials""; ""3 Statistical Approaches to Analysis of Small Clinical Trials""; ""4 General Guidelines""; ""References""; ""Appendix A Study Methods""; ""Appendix B Glossary of Statistical and Clinical Trials Terms""; ""Appendix C Selected Bibliography on Small Clinical Trials""; ""Appendix D Committee and Staff Biographies"" |
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Sommario/riassunto |
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Clinical trials are used to elucidate the most appropriate preventive, diagnostic, or treatment options for individuals with a given medical condition. Perhaps the most essential feature of a clinical trial is that it aims to use results based on a limited sample of research participants to see if the intervention is safe and effective or if it is comparable to a comparison treatment. Sample size is a crucial component of any clinical trial. A trial with a small number of research participants is more prone to variability and carries a considerable risk of failing to demonstrate the effectiveness of a given intervention when one really is |
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present. This may occur in phase I (safety and pharmacologic profiles), II (pilot efficacy evaluation), and III (extensive assessment of safety and efficacy) trials. Although phase I and II studies may have smaller sample sizes, they usually have adequate statistical power, which is the committee's definition of a "large" trial. Sometimes a trial with eight participants may have adequate statistical power, statistical power being the probability of rejecting the null hypothesis when the hypothesis is false. Small Clinical Trials assesses the current methodologies and the appropriate situations for the conduct of clinical trials with small sample sizes. This report assesses the published literature on various strategies such as (1) meta-analysis to combine disparate information from several studies including Bayesian techniques as in the confidence profile method and (2) other alternatives such as assessing therapeutic results in a single treated population (e.g., astronauts) by sequentially measuring whether the intervention is falling above or below a preestablished probability outcome range and meeting predesigned specifications as opposed to incremental improvement. |
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