Glossary

AJAX progress indicator
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  • Observational StudyIn epidemiology and statistics, an observational study draws conclusions about the possible effect of a treatment on participants, where the assignment of participants into a treatment group versus a control group is outside the control of the investigator.However, in some cases observational(...)
  • Observer BiasObserver bias (also called ascertainment or detection bias) is caused when the actions of an investigator affect the results of a trial. Observer bias can be unintentional and could arise from the investigator's hopes or expectations of the trial. It is most likely to occur when: the(...)
  • Observer-reported outcomeA measurement based on an observation by someone other than the patient or a health professional such as a parent, or other non-clinical caregiver who regularly observes the patient in daily life and is in a position to report on a specific aspect of the patient’s health.This type of measure(...)
  • ObsROA measurement based on an observation by someone other than the patient or a health professional such as a parent, or other non-clinical caregiver who regularly observes the patient in daily life and is in a position to report on a specific aspect of the patient’s health.This type of measure(...)
  • Oestrogen Receptors (Estrogen Receptors)Oestrogen Receptors (Estrogen Receptors)
  • EROestrogen Receptors (Estrogen Receptors)
  • Off label useOff-label use refers to situations where a medicinal product is intentionally used for a medical purpose other than what is stated in the authorised product information, i.e. the Summary of Product Characteristics (SmPC).Examples of off-label use include non-authorised: indication, age(...)
  • Official Medicines Control LaboratoryOfficial Medicines Control Laboratory
  • OMCLOfficial Medicines Control Laboratory
  • Omics technologiesThe 'Omics technologies are relatively recent fields of study such as genomics, proteomics, or metabolomics. They deal with large amounts of data because they assess entire genomes, proteomes, or metabolomes. Information technology (IT) is therefore a crucial element in 'omics research.

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