Is omission of free text records a possible source of data loss and bias in Clinical Practice Research Datalink studies? A case–control study

OBJECTIVES: To estimate data loss and bias in studies of Clinical Practice Research Datalink (CPRD) data that restrict analyses to Read codes, omitting anything recorded as text. DESIGN: Matched case–control study. SETTING: Patients contributing data to the CPRD. PARTICIPANTS: 4915 bladder and 3635...

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Detalles Bibliográficos
Autores principales: Price, Sarah J, Stapley, Sal A, Shephard, Elizabeth, Barraclough, Kevin, Hamilton, William T
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BMJ Publishing Group 2016
Materias:
Epidemiology
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4874123/
https://www.ncbi.nlm.nih.gov/pubmed/27178981
http://dx.doi.org/10.1136/bmjopen-2016-011664

Internet

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4874123/
https://www.ncbi.nlm.nih.gov/pubmed/27178981
http://dx.doi.org/10.1136/bmjopen-2016-011664

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