Subscribe Now Subscribe Today
Science Alert
 
Blue
   
Curve Top
Journal of Applied Sciences
  Year: 2012 | Volume: 12 | Issue: 13 | Page No.: 1413-1417
DOI: 10.3923/jas.2012.1413.1417
 
Facebook Twitter Digg Reddit Linkedin StumbleUpon E-mail

A Comparison of Methods to Detect Publication Bias for Meta-analysis of Continuous Data

Nik Ruzni Nik Idris

Abstract:
Publication bias is a serious problem in meta-analysis. Various methods have been developed to detect the presence of publication bias in meta-analysis. These methods have been assessed and compared in many dichotomous studies utilizing the log-odds ratio as the measure of effect. This study evaluates and compares the performance of three popular methods, namely the Egger’s linear regression method, the Begg and Mazumdar’s rank correlation method and the Duval and Tweedie’s trim and fill method, on meta-analysis of continuous data. The data comprised simulated meta-analyses with different levels of primary studies in the absence and presence of induced publication bias. The performances of these methods were measured through the power and type 1 error rate for the tests. The results suggest the trim and fill method to be superior in terms of its ability to detect publication bias when it exists, even in presence of only 5% unpublished studies. However, this method is not recommended for large meta-analysis as it produces high rate of false-positive results. Both linear regression and rank correlation method performed relatively well in moderate bias but should be avoided in small meta-analysis as their power is very low in this data.
PDF Fulltext XML References Citation Report Citation
 RELATED ARTICLES:
  •    Quality Assessment for Systematic Review /Meta-Analysis on Antidepressant Therapy Published in Chinese Journals
  •    Estimating the Negative Binomial Dispersion Parameter
  •    Object-oriented Programming Strategies for Numerical Solvers Applied to Continuous Simulation
  •    Simulation of Temperature Effect on the Population Dynamic of the Mediterranean Fruit Fly Ceratitis capitata (Diptera; Tephritidae)
  •    Numerical Simulation of Flow Around a Row of Circular Cylinders Using the Lattice Boltzmann Method
How to cite this article:

Nik Ruzni Nik Idris , 2012. A Comparison of Methods to Detect Publication Bias for Meta-analysis of Continuous Data. Journal of Applied Sciences, 12: 1413-1417.

DOI: 10.3923/jas.2012.1413.1417

URL: https://scialert.net/abstract/?doi=jas.2012.1413.1417

COMMENT ON THIS PAPER
 
 
 

 

 
 
 
 
 
 
 
 
 

 
 
 
 
 
 
 

Curve Bottom