A5V4d

Feverish illness in children
Trust A trust is an NHS organisation responsible for providing a group of healthcare
services. An acute trust provides hospital services. A mental health trust
provides most mental health services. A primary care trust buys hospital care
on behalf of the local population, as well as being responsible for the provision
of community health services.
Tympanic thermometer A thermometer that is inserted into the external ear canal and measures the
temperature of blood vessels in the tympanic membrane (eardrum) by
detecting infrared radiation.
Validity Assessment of how well a tool or instrument measures what it is intended to
measure. See also external validity, internal validity.
Variable A measurement that can vary within a study, for example the age of
participants. Variability is present when differences can be seen between
different people or within the same person over time, with respect to any
characteristic or feature that can be assessed or measured.
Appendices A to L are presented as separate files
304