Papers Research pointers Survey of claims of no effect in abstracts of Cochrane reviews BMJ 2003; 326 doi: https://doi.org/10.1136/bmj.326.7387.475 (Published 01 March 2003) Cite this as: BMJ 2003;326:475 Article Related content Metrics Responses Peer review Related articles Letter “Evidence of absence” can be important Published: 05 June 2003; BMJ 326 doi:10.1136/bmj.326.7401.1267 See more Risk of subsequent thromboembolism for patients with pre-eclampsia BMJ April 12, 2003, 326 (7393) 791-792; DOI: https://doi.org/10.1136/bmj.326.7393.791 Mortality from cardiovascular disease more than 10 years after radiotherapy for breast cancer: nationwide cohort study of 90 000 Swedish women BMJ February 01, 2003, 326 (7383) 256-257; DOI: https://doi.org/10.1136/bmj.326.7383.256 Platelet responsiveness to aspirin in patients with hyperlipidaemia BMJ January 11, 2003, 326 (7380) 82-83; DOI: https://doi.org/10.1136/bmj.326.7380.82 Association of common genetic variant with susceptibility to invasive pneumococcal disease BMJ June 08, 2002, 324 (7350) 1369; DOI: https://doi.org/10.1136/bmj.324.7350.1369 Unexplained differences in sex ratios at birth in Europe and North America BMJ April 27, 2002, 324 (7344) 1010-1011; DOI: https://doi.org/10.1136/bmj.324.7344.1010 Cited by... Claims of 'no difference or 'no effect in Cochrane and other systematic reviewsAbstract Fulltext PDF Reporting and interpretation of results from clinical trials that did not claim a treatment difference: survey of four general medical journalsAbstract Fulltext PDF Perioperative haemodynamic therapy for major gastrointestinal surgery: the effect of a Bayesian approach to interpreting the findings of a randomised controlled trialAbstract Fulltext PDF Shifting Our Thinking About Uncommon Disease Trials: The Case of Methotrexate in SclerodermaAbstract Fulltext PDF Superiority trials, non-inferiority trials, and prisoners of the 2-sided null hypothesisAbstract Fulltext PDF "Evidence of absence" can be importantAbstract Fulltext PDF