Cargando…
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...
Autores principales: | , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BMJ Publishing Group
2016
|
Materias: | |
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 |