MOST PUBLISHED META-REGRESSION ANALYSES BASED ON AGGREGATE DATA SUFFER FROM METHODOLOGICAL PITFALLS: A META-EPIDEMIOLOGICAL STUDY

Most published meta-regression analyses based on aggregate data suffer from methodological pitfalls: a meta-epidemiological study

Abstract Background Due to clinical and methodological diversity, clinical studies included in meta-analyses often differ in ways that lead to differences in treatment effects across studies.Meta-regression analysis is generally recommended to explore associations between study-level characteristics and treatment effect, however, three key pitfalls

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Polar Patrol Balloon experiment during 1991-1993

Since 1984 the National Institute of Polar Research, the Institute of Space and Astronautical Science and collaborative scientists have conducted the long-term circumpolar balloon program that is called Polar Patrol Balloon (PPB) project, and they also have developed ballooning technologies for this program.This project aims at establishing a stati

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