TY - JOUR KW - Drug Exposure Definition KW - Electronic Health Records KW - Free Text KW - Misclassification KW - Narrative Prescribing Instructions KW - Opioids KW - pharmacoepidemiology AU - M. Jani AU - B. Yimer AU - D. Selby AU - M. Lunt AU - G. Nenadic AU - W. Dixon AD - Centre for Epidemiology Versus Arthritis, Centre for Musculoskeletal Research, The University of Manchester, Manchester, UK. NIHR Manchester Biomedical Research Centre, Manchester University NHS Foundation Trust, The University of Manchester, Manchester, UK. Salford Royal Hospital, Northern Care Alliance NHS Foundation Trust, Salford, UK. Department of Computer Science, University of Manchester, Manchester, UK. AN - 36718594 BT - Pharmacoepidemiol Drug Saf DO - 10.1002/pds.5595 DP - NLM ET - 2023/02/01 LA - eng N1 - 1099-1557 Jani, Meghna Orcid: 0000-0002-1487-277x Yimer, Belay Birlie Selby, David Lunt, Mark Nenadic, Goran Dixon, William G Journal Article England Pharmacoepidemiol Drug Saf. 2023 Jan 31. doi: 10.1002/pds.5595. PY - 2023 SN - 1053-8569 T2 - Pharmacoepidemiol Drug Saf TI - "Take up to eight tablets per day": Incorporating free-text medication instructions into a transparent and reproducible process for preparing drug exposure data for pharmacoepidemiology ER -