Bookmarkers beware: Bookmarks to pages other than the home page may not work after we change our server in April Editor's Choice | This Week in BMJ | Press releases BMJ No 7129 Volume 316 Letters Saturday 7 February 1998 Bias in meta-analysis detected by a simple, graphical test Asymmetry detected in funnel plot was probably due to true heterogeneity A E Stuck and others Experts' views are still needed Jan P Vandenbroucke Graphical test is itself biased L Irwig and others Test had 10% false positive rate V Seagroatt and I Stratton Authors' reply M Egger and others Prospectively identified trials could be used for comparison with meta-analyses Peter Langhorne Increase in studies of publication bias coincided with increasing use of meta-analysis F Song and S Gilbody Home | Current issue | Past issues | Classified ads | Career Focus | Feedback Collections | About this site | About the BMJ | BMA | Medline