Data extraction errors and double counting

Articles that support this problem:

A case study of binary outcome data extraction across three systematic reviews of hip arthroplasty: errors and differences of selection

2013 : Bmc research notes

High prevalence but low impact of data extraction and reporting errors were found in Cochrane systematic reviews

2005 : Journal of clinical epidemiology

Data extraction methods: an analysis of internal reporting discrepancies in single manuscripts and practical advice

2020 : Journal of clinical epidemiology

Errors in systematic reviews: an example of computed tomography screening for lung cancer

2014 : European journal of cancer prevention

Errors in the conduct of systematic reviews of pharmacological interventions for irritable bowel syndrome

2010 : American journal of gastroenterology

Different patterns of duplicate publication: an analysis of articles used in systematic reviews

2004 : Jama

Incorrect inclusion of individual studies and methodological flaws in systematic review and meta-analysis

2014 : British journal of general practice

Missing binary data extraction challenges from Cochrane reviews in mental health and Campbell reviews with implications for empirical research

2017 : Research synthesis methods

Cochrane has not consistently followed the COPE guidelines

2020 : European journal of clinical investigation

Increased risks for random errors are common in outcomes graded as high certainty of evidence

2019 : Journal of clinical epidemiology

Selecting studies (not reports) as the unit of interest of systematic reviews and meta-analyses: an essential practice

2020 : International journal of obesity

Disagreements in meta-analyses using outcomes measured on continuous or rating scales: observer agreement study

2009 : Bmj

Letter to the Editor concerning "The role of non-rigid cervical collar in pain relief and functional restoration after whiplash injury: a systematic review and a pooled analysis of randomized controlled trials" by Ricciardi L, et al. (Eur Spine J; [2019] 28:1821-1828)

2020 : European spine journal

Appraising the exercise oncology literature: a reminder of the rigour needed in systematic reviews

2019 : British journal of sports medicine

Validity of data extraction in evidence synthesis practice of adverse events: reproducibility study

2022 : Bmj

RE: Physical Activity and the Risk of Liver Cancer: A Systematic Review and Meta-Analysis of Prospective Studies and a Bias Analysis

2020 : Journal of the national cancer institute

Importance of excluded duplicates reporting in a systematic review

2021 : World journal of pediatrics

Errors and Biases in Meta-analysis of the Prevalence of Olfactory Dysfunction in Patients With COVID-19

2021 : Otolaryngology - head and neck surgery (united states)

Methodological considerations for systematic review and meta-analysis of Xpert bladder cancer monitor

2022 : Urologic oncology: seminars and original investigations

Letter to the editor regarding "The effectiveness of manual therapy on pain, physical function, and nerve conduction studies in carpal tunnel syndrome patients: a systematic review and meta-analysis"

2022 : International orthopaedics