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Fowler D, Berry C, Hodgekins J, et al. Social recovery therapy for young people with emerging severe mental illness: the Prodigy RCT. Southampton (UK): NIHR Journals Library; 2021 Nov. (Health Technology Assessment, No. 25.70.)

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Social recovery therapy for young people with emerging severe mental illness: the Prodigy RCT.

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Appendix 4Adverse event definitions

TABLE 63

Adverse event definitions

EventDefinition
AE

Any untoward medical occurrence in a patient or clinical trial participant that does not necessarily have a causal relationship with this product

AEs include an exacerbation of a pre-existing illness, an increase in the frequency or intensity of a pre-existing episodic event or condition, a condition (regardless of whether or not present prior to the start of the trial) that is detected after trial intervention administration (this does not include pre-existing conditions recorded as such at baseline), and continuous persistent disease or a symptom present at baseline that worsens following administration of the trial treatment

AEs do not include medical or surgical procedures, pre-existing disease or a condition present before treatment that does not worsen, hospitalisation where no untoward or unintended response has occurred (e.g. elective cosmetic surgery), and overdose of medication without signs or symptoms

Adverse reactionAny untoward and unintended response to an investigational medicinal product related to any dose administered
Unexpected adverse reactionAn adverse reaction, the nature or severity of which is not consistent with the applicable product information (e.g. investigator’s brochure for an unauthorised product or summary of product characteristics for an authorised product)
SAE or serious adverse reactionAny AE or adverse reaction that at any dose:
  • results in death
  • is life-threateninga
  • requires hospitalisation or prolongs existing hospitalisationb
  • results in persistent or significant disability or incapacity
  • is a congenital anomaly or birth defect
  • is another important medical conditionc
a

The term life-threatening refers to an event in which the patient is at risk of death at the time of the event; it does not refer to an event that might hypothetically cause death if it was more severe (e.g. a silent myocardial infarction).

b

Hospitalisation is defined as an inpatient admission of any length of stay, even if the hospitalisation is a precautionary measure for continued observation. Hospitalisation for pre-existing conditions (including elective procedures that have not worsened) do not constitute a SAE.

c

Medical judgement should be exercised in deciding whether an AE or adverse reaction is serious in other situations. Important AEs or adverse reactions may not be immediately life-threatening or result in death or hospitalisation, but may seriously jeopardise the participant by requiring intervention to prevent one of the other outcomes listed in the table (e.g. a secondary malignancy, an allergic bronchospasm requiring intensive emergency treatment, seizures or blood dyscrasias that do not require hospitalisation, or development of drug dependency).

Copyright © Queen’s Printer and Controller of HMSO 2021. This work was produced by Fowler et al. under the terms of a commissioning contract issued by the Secretary of State for Health and Social Care. This issue may be freely reproduced for the purposes of private research and study and extracts (or indeed, the full report) may be included in professional journals provided that suitable acknowledgement is made and the reproduction is not associated with any form of advertising. Applications for commercial reproduction should be addressed to: NIHR Journals Library, National Institute for Health Research, Evaluation, Trials and Studies Coordinating Centre, Alpha House, University of Southampton Science Park, Southampton SO16 7NS, UK.
Bookshelf ID: NBK575579

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