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

Bibliographic Details
Main Authors: Price, Sarah J, Stapley, Sal A, Shephard, Elizabeth, Barraclough, Kevin, Hamilton, William T
Format: Online
Language:English
Published: BMJ Publishing Group 2016
Online Access:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4874123/