An operation to reduce wrinkles and lift ‘loose’ skin on the face of mature persons with the aim of making them look younger. It can be performed under local anaesthetic as an outpatient or with general anaesthesia as an inpatient. The operation is regarded as cosmetic and is usually done in the private health-care sector in the UK.... face lift
The extent to which a measurement, test or study measures what it purports to measure. There are various types of validity: construct validity: The degree to which an instrument measures the characteristic being investigated; the extent to which the conceptual definition matches the operational definition. content validity: Verification that the method of measurement actually measures what it is expected to measure, covering all areas under investigation reasonably and thoroughly. criterion validity: Verification that the instrument correlates with external criteria of the phenomenon under study, either concurrently or predictively. external validity: The extent to which study results can be generalized beyond the sample used in the study. face validity: A type of content validity, determining the suitability of a given instrument as a source of data on the subject under investigation, using commonsense criteria. internal validity: the extent to which the effects detected in a study are truly caused by the treatment or exposure in the study sample, rather than being due to other biasing effects of extraneous variables.... validity
(facial Afro-Caribbean eruption of childhood) a rare skin condition seen in Afro-Caribbean children. Characterized by a papular eruption around the eyes, nose, and mouth, it is a benign and self-limiting condition that usually subsides within a few months to years.... face
n. (in dentistry) an instrument for transferring the jaw relationship of a patient to an *articulator to allow reproduction of the lateral and protrusive movements of the lower jaw. Specifically, it transfers the relationship of the maxillary arch and temporomandibular joint.... face-bow
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