meta-analysis bias in location and selection of studies

Bias in meta-analysis detected by a simple, graphical test

1997 • 47,526 citations

Operating Characteristics of a Rank Correlation Test for Publication Bias

1994 • 15,160 citations

The file drawer problem and tolerance for null results.

1979 • 7,706 citations

Empirical evidence of bias. Dimensions of methodological quality associated with estimates of treatment effects in controlled trials

1995 • 5,696 citations

Helsinki Heart Study: Primary-Prevention Trial with Gemfibrozil in Middle-Aged Men with Dyslipidemia

1987 • 3,889 citations

Publication bias in clinical research

1991 • 3,034 citations

Systematic Reviews: Identifying relevant studies for systematic reviews

1994 • 2,285 citations

Meta-analysis: Principles and procedures

1997 • 2,277 citations

Summing up: The Science of Reviewing Research

1987 • 1,530 citations

Language bias in randomised controlled trials published in English and German

1997 • 1,002 citations

Publication Decisions and their Possible Effects on Inferences Drawn from Tests of Significance—or Vice Versa

1959 • 865 citations

Factors Influencing Publication of Research Results

1992 • 838 citations

Publication bias: evidence of delayed publication in a cohort study of clinical research projects

1997 • 831 citations

The file drawer problem and tolerance for null results.

1979 • 761 citations

Publication bias and clinical trials

1987 • 715 citations

Impact of covert duplicate publication on meta-analysis: a case study

1997 • 689 citations

Low-molecular-weight heparin versus standard heparin in general and orthopaedic surgery: a meta-analysis

1992 • 679 citations

Completeness of reporting of trials published in languages other than English: implications for conduct and reporting of systematic reviews

1996 • 543 citations

Underreporting Research Is Scientific Misconduct

1990 • 542 citations

Publication Decisions and Their Possible Effects on Inferences Drawn from Tests of Significance--Or Vice Versa

1959 • 533 citations

Selecting the language of the publications included in a meta-analysis: Is there a tower of babel bias?

1995 • 523 citations

An exercise in mega-silliness.

1978 • 450 citations

Cholesterol lowering and mortality: the importance of considering initial level of risk.

1993 • 431 citations

The Value of Lowering Cholesterol after Myocardial Infarction

1990 • 427 citations

Publication Bias and Dissemination of Clinical Research

1989 • 418 citations

Source of funding and outcome of clinical trials

1986 • 410 citations

Cholesterol lowering trials in coronary heart disease: frequency of citation and outcome.

1992 • 319 citations

NIH clinical trials and publication bias.

1993 • 289 citations

A study of manufacturer-supported trials of nonsteroidal anti-inflammatory drugs in the treatment of arthritis

1994 • 277 citations

Meta-Analysis in the Breech

1990 • 234 citations

Bias in meta-analytic research

1992 • 224 citations

Confronting publication bias: A cohort design for meta‐analysis

1987 • 220 citations

Minimizing the Three Stages of Publication Bias

1990 • 215 citations

Factors influencing publication of research results. Follow-up of applications submitted to two institutional review boards

1992 • 192 citations

Are research ethics committees behaving unethically? Some suggestions for improving performance and accountability

1996 • 187 citations

Redundancy, disaggregation, and the integrity of medical research

1996 • 176 citations

Low Fat, Low Cholesterol Diet in Secondary Prevention of Coronary Heart Disease

1978 • 172 citations

Redundancy, disaggregation, and the integrity of medical research.

1996 • 126 citations

Underreporting research is scientific misconduct

1990 • 97 citations

Efficacy of Gemfibrozil in Dyslipidaemic Subjects with Suspected Heart Disease. An Ancillary Study in the Helsinki Heart Study Frame Population

1993 • 94 citations

Publication: an ethical imperative

1995 • 91 citations

CHOLESTEROL-LOWERING TRIAL RESULTS IN THEIR EPIDEMIOLOGIC CONTEXT

1985 • 89 citations

Summing up: The Science of Reviewing Research

1985 • 89 citations

The Cochrane Collaboration

1998 • 50 citations

Lowering cholesterol: effects on trauma death, cancer death and total mortality

1992 • 20 citations

Publication bias: Its implications for clinical pharmacology

1992 • 19 citations

Circulation in the Extremities.

1968 • 13 citations

Deleted Work

1955 • 0 citations