Compare trial: Updated data
نویسندگان
چکیده
منابع مشابه
Clinical trial to compare tinnitus masking and tinnitus retraining therapy.
CONCLUSION Both tinnitus masking (TM) and tinnitus retraining therapy (TRT) can be effective therapies for amelioration of tinnitus. TM may be more effective for patients in the short term, but with continued treatment TRT may produce the greatest effects. OBJECTIVES Although TM and TRT have been used for many years, research has not documented definitively the efficacy of these methods. The ...
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BACKGROUND There remain uncertainties about age-specific effects of breast cancer screening on mortality due to the disease. METHODS In 1982, a randomized trial of mammographic screening every 18 months was started in Gothenburg, Sweden. Women between the ages of 39 and 49 years were randomized to an invitation to screening (intervention group; n = 11,792) or to usual care (the control group;...
متن کاملA generalized cost Malmquist index to compare the productivities of units with negative data in DEA
In some data envelopment analysis (DEA) applications, some inputs of DMUs have negative values with positive cost. This paper generalizes the global cost Malmquist productivity index to compare the productivity of dierent DMUs with negative inputs in any two periods of times under variable returns to scale (VRS) technology, and then the generalized index is decomposed to several components. The...
متن کاملMultivariate permutation test to compare survival curves for matched data
BACKGROUND In the absence of randomization, the comparison of an experimental treatment with respect to the standard may be done based on a matched design. When there is a limited set of cases receiving the experimental treatment, matching of a proper set of controls in a non fixed proportion is convenient. METHODS In order to deal with the highly stratified survival data generated by multipl...
متن کاملPermutation Tests to Compare Survival Curves for Matched Data
Riassunto: L’obiettivo di questo lavoro è sviluppare un test per il confronto della sopravvivenza tra gruppi di soggetti appaiati in proporzione non fissa. L’appaiamento produce dati stratificati, con strati spesso di dimensione esigua e con forme di dipendenza entro strato difficili da identificare. Si è pertanto esplorato, in questo contesto, l’uso di test di permutazione quale possibile alte...
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ژورنال
عنوان ژورنال: Journal of Hepatology
سال: 2008
ISSN: 0168-8278
DOI: 10.1016/j.jhep.2008.05.009