Literature DB >> 21743119

Negative studies published in Indian medical journals are underpowered.

Charan Jayakaran, Deepak Saxena, Preeti Yadav.   

Abstract

51 inconclusive studies published in 14 Indian medical journals were analyzed for adequacy of power by post hoc power calculation. No study was found to be adequately powered (%80%) at small effect size, only 8 studies were adequately powered for medium effect size and 30 studies were adequately powered at large effect size.

Mesh：

Year:  2011        PMID： 21743119

Source DB:  PubMed          Journal:  Indian Pediatr        ISSN： 0019-6061            Impact factor:   1.411


  3 in total

1.  Modeling and validating Bayesian accrual models on clinical data and simulations using adaptive priors.

Authors:  Yu Jiang; Steve Simon; Matthew S Mayo; Byron J Gajewski
Journal:  Stat Med       Date:  2014-11-06       Impact factor: 2.373

Review 2.  Comparison of methodological quality of positive versus negative comparative studies published in Indian medical journals: a systematic review.

Authors:  Jaykaran Charan; Mayur Chaudhari; Ryan Jackson; Rahul Mhaskar; Tea Reljic; Ambuj Kumar
Journal:  BMJ Open       Date:  2015-06-24       Impact factor: 2.692

Review 3.  How to calculate sample size for different study designs in medical research?

Authors:  Jaykaran Charan; Tamoghna Biswas
Journal:  Indian J Psychol Med       Date:  2013-04
  3 in total

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