Factor Analysis
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Face Validity Definition Face Validity consists of several considerations. (1) Language clarity and the comprehension of items (i.e. whether items and instructions superficially make sense and are easily understood). (2) Comprehensiveness of response scales and whether they are sufficient to allow individuals to report their experiences. The appropriateness of recall periods with respect to potential bias or errors of memory should also be considered. (3) Subjective opinion of potential responders on the relevance and acceptability of the instrument and items, since this may influence nonresponse in any subsequent application.
Facet Arthropathy Definition Degenerative change of the small joints (facet joints) connecting single vertebrae dorsally.
FACT-Br Questionnaire Definition A scale that contains 53 questions with high validity and good psychometric properties and efficacy to assess QOL in patients with brain tumors.
FACT-G Definition A 27-item core multidimensional questionnaire evaluating various domains of QL including physical, functional, family, social, and emotional domains. Items are summed to give scores for each domain, and an overall QL score.
Factor Analysis Definition A statistical technique of data reduction used to assess patterns among groups of observed variables and then cluster similar variables into ‘‘factors’’ which has the effect of reducing the number of variables necessary to work with without losing much of the information. Types include exploratory and confirmatory factor analyses.
Failed Back Surgery Syndrome Definition Umbrella term for the lack of improvement after back surgery.
Family Accommodation Definition Familial responses that are specifically related to obsessive-compulsive symptomatology: it includes behaviors such as feeling obliged to assist a relative with OCD when he/she is performing a ritual or respecting the rules that OCD imposes on the patient and, at the opposite side, interfering with the rituals or actively opposing them.
Family Dermatology Life Quality Index Definition A validated, dermatology-specific quality of life assessment form used in family members or partners of patients >16 years of age.
Family Functioning Definition Family Functioning is the overall ability for the family to work together to support each other
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