Do Certain Countries Produce Only Positive Results? A Systematic Review of Controlled Trials

Operating Characteristics of a Rank Correlation Test for Publication Bias

1994 • 15,160 citations

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

1995 • 5,696 citations

Publication bias in clinical research

1991 • 3,034 citations

The Existence of Publication Bias and Risk Factors for Its Occurrence

1990 • 1,335 citations

Meta-Analysis in Clinical Research

1987 • 1,269 citations

The Cochrane Collaboration

1995 • 698 citations

Statistical Problems in the Reporting of Clinical Trials

1987 • 663 citations

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

1996 • 543 citations

The Cochrane Collaboration. Preparing, maintaining, and disseminating systematic reviews of the effects of health care

1995 • 381 citations

Acupuncture and chronic pain: A criteria-based meta-analysis

1990 • 320 citations

Acupuncture and asthma: a review of controlled trials.

1991 • 124 citations

A measure to aid in the interpretation of published clinical trials

1985 • 102 citations