thc registers with the cochrane handsearching program
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Are the Cochrane group registers comprehensive? A case study of Japanese psychiatry trials
BACKGROUND Language bias is a form of publication bias and constitutes a serious threat to meta-analyses. The Cochrane Controlled Trials Register is one attempt to remedy this and now contains more than 300,000 citations. However we are still unsure if it provides comprehensive coverage, particularly for non-English trials. METHODS We have recently established a comprehensive register of Japa...
متن کاملIdentification of Additional Trials in Prospective Trial Registers for Cochrane Systematic Reviews
BACKGROUND Publication and selective outcome reporting bias are a threat to the validity of systematic reviews. Extensive searching for additional trials in prospective trial registers could reduce this problem. We have evaluated how authors of Cochrane systematic reviews currently make use of trial registers as an additional source for the identification of potentially eligible trials. METHO...
متن کاملNew extraction method of THC and its metabolites, 11-OH-THC and THC-COOH, in plasma
Objectives: A liquid/liquid extraction technique on solid support of Δ9-tetradydrocannabinol (THC), 11-hydroxy-Δ9-tetradydrocannabinol (11-OH-THC) and 11-nor-Δ9-tetradydrocannabinol-9-carboxylic acid (THCCOOH) in plasma was developed in order to be assayed by high-performance liquid chromatography and tandem mass spectrometry (HPLC-MS/MS). Methods: The samples were extracted by liquid/liquid ex...
متن کاملOn instruction sets for Boolean registers in program algebra
In program algebra, different instruction sets for Boolean registers are conceivable. In previous work on instruction sequence size complexity, we chose instruction sets for Boolean registers that contain only a few of the possible instructions. In the current paper, we study instruction sequence size bounded functional completeness of instruction sets for Boolean registers. This work is among ...
متن کاملScalar Program Performance on Multiple-Instruction-Issue Processors with a Limited Number of Registers
In this paper the performance of multiple-instructionissue processors with variable register le sizes is examined for a set of scalar programs. We make several important observations. First, multiple-instruction-issue processors can perform e ectively without a large number of registers. In fact, the register les of many existing architectures (16{32 registers) are capable of sustaining a high ...
متن کامل[The Cochrane collaboration and the Cochrane library in urology].
The Cochrane Collaboration is an international, non-profit making organisation which aims to help people make well-informed health care decisions. The main objective is to prepare, update, promote and facilitate access to systematic reviews on health care interventions. The main product is The Cochrane Library, a quarterly electronic publication. The principles and structure of the Cochrane Col...
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the journal of tehran university heart centerجلد ۲، شماره ۲، صفحات ۶۷-۰
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