… We do not yet have enough experience to know which types of retrospective analysis have
… If several retrospective analyses using different methodologies and different data sets show …

… (including statistical reports and tables) in the study and take responsibility for the integrity
of the data and the accuracy of the data analysis. All authors read and approved the final …

… Our quantitative analysis of simple observational data was exploratory in nature, generating
issues for the qualitative phase of the study, and we chose not to employ formal tests of …

… 1984 to December 1997 and medical and demographic risk factors associated with …
retrospective case control study using patient records from a state-maintained anonymous database …

… medical conditions in relation to readmission, data on the patients' quality of life, health status,
functional status and satisfaction were unavailable. Finally, the cost data … various medical …

… a similar analysis of corresponding mortality data in the … database for 34 European countries
and the USA for the period 1970-2011.The WHO mortality database provides annual data …

… The aim of this study was to conduct a retrospective database analysis to describe the … the
IMS Oncology Database, which contains electronic medical record (EMR) data collected from …

… morbidity within a large computerised general practitioner database. Design: Retrospective
survey of morbidity and prescribing data linked to new prescriptions for proton pump …

… We performed a retrospective analysis of administrative database—Healthcare Costs and
Utilization Project’s Nationwide Inpatient Sample—to test whether mortality is more likely …

… analysis (eg, including an incremental cost-effectiveness ratio) because our database does
not … the specific information on patient-related outcomes needed for this analysis. The claims …