منابع مشابه
Interpreting Null Findings from Trials of Alcohol Brief Interventions
The effectiveness of alcohol brief intervention (ABI) has been established by a succession of meta-analyses but, because the effects of ABI are small, null findings from randomized controlled trials are often reported and can sometimes lead to skepticism regarding the benefits of ABI in routine practice. This article first explains why null findings are likely to occur under null hypothesis sig...
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A frustrating event in the course of interaction with a database management system is query failure: a query is submitted to the database, but instead of the anticipated printout, the system responds with an empty set of da ta items. While such null answers are always correct from a technical'point of view, quite often they are unsatisfactory. Most efforts to deal with this problem have been in...
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We have searched for gravitational-lens induced echoes between gamma-ray bursts (GRBs) in BATSE data. The search was conducted in two phases. In the first phase we compared all GRBs in a brightness complete sample of the first 260 GRBs with recorded angular positions having at least 5 % chance of being coincident from their combined positional error. In the second phase, we compared all GRB lig...
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ژورنال
عنوان ژورنال: BMJ
سال: 2008
ISSN: 0959-8138,1756-1833
DOI: 10.1136/bmj.39549.430162.3a