A priori
A priori comparisons are planned in advance of any data analysis. They are more reliable than post-hoc comparisons.
A priori comparisons are planned in advance of any data analysis. They are more reliable than post-hoc comparisons.
The difference in the event rate between control group (CER) and treated group (EER): ARR = CER – EER.
Used when randomising participants to treatment groups in an RCT. Allocation is concealed when neither the participants nor the researchers know or can predict to which group in a study (control or treatment) the patient is assigned. Allocation concealment takes place before the study begins as patients are being assigned. It is a sign of a robust study.
A unique bibliographic database produced by the Health Care Information Service of the British Library. It covers a selection of journals in complementary medicine, palliative care, and several professions allied to medicine. Covers the years from 1985 to present and is updated monthly.
To examine associations between variables—these may be hypothesised causal or therapeutic relations.
A statistical dependence between two or more events, characteristics or other variables. An association may be fortuitous or may be produced by various other circumstances; the presence of an association does not necessarily imply a causal relationship
Any tendency to influence the results of a trial (or its interpretation) other than the experimental intervention.
A technique used in research to eliminate bias by hiding the intervention from the patient, clinician, and/or other researchers who are interpreting results.
The BNF (British National Formulary) provide UK healthcare professionals with authoritative and practical information on the selection and clinical use of medicines (includes BNF for Children).
The Bristol Health Partners is a collaboration between the city’s three NHS trusts, three clinical commissioning groups, two universities and its local authority. They aim to maximise Bristol’s health research, and transform the understanding, prevention and treatment of key health problems in Bristol.
The observational epidemiologic study of persons with the disease (or other outcome variable) of interest, and a suitable control (comparison, reference) group of persons without the disease. The relationship of an attribute to the disease is examined by comparing the diseased and non-diseased with regard to how frequently the attribute is present or, if quantitative, the levels of the attribute, in each of the groups.