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Using a cut-off of 8 the GAD-7 has a sensitivity of 92% and specificity of 76% for diagnosis generalized anxiety disorder. The following cut-offs correlate with level of anxiety severity: Score 0-4: Minimal Anxiety; Score 5-9: Mild Anxiety; Score 10-14: Moderate Anxiety; Score greater than 15: Severe Anxiety
GAD-7: Content validity: Good Covers seven of the core symptoms for generalized anxiety disorder. [32] Construct validity (e.g., predictive, concurrent, convergent, and discriminant validity) Good Scores correlate with the Beck Anxiety Inventory (r= .72) and the anxiety subscale of the SCL-90 (r=.74). [2] Discriminative validity Too excellent
One point is assigned to each answer and the cumulative score is rated on a scoring grid. [2] The grid sets a range of 0–9 as "normal", 10–19 as "mildly depressed", and 20–30 as "severely depressed". A diagnosis of clinical depression should not be based on GDS results alone.
The Eating Disorder Examination Questionnaire (EDE-Q) is a 28-item self-report questionnaire, adapted from the semi-structured interview, the Eating Disorder Examination (EDE). The questionnaire is designed to assess the range, frequency and severity of behaviours associated with a diagnosis of an eating disorder.
Some depression rating scales are completed by patients. The Beck Depression Inventory, for example, is a 21-question self-report inventory that covers symptoms such as irritability, fatigue, weight loss, lack of interest in sex, and feelings of guilt, hopelessness or fear of being punished. [11]
The GAD-7 was originally validated in a primary care sample and a cutoff score of 10 (which the authors considered optimal) had a sensitivity value of 0.89 and a specificity value of 0.82 for identifying GAD. The authors of the questionnaire also found acceptable sensitivity and specificity values when the questionnaire was used as a general ...
Responses range from "not at all" (a score of 0) to "bothered a lot" (a score of 2). Higher scores on the PHQ-15 are strongly associated with functional impairment, disability, and healthcare utilization. [13] The GAD-7 is a seven-item anxiety screening instrument developed in 2006 with a similar format to that of the PHQ-9. [20]
Using the Likert scale the response choices are given the values 0, 1, 2, and 3 respectively. [7] [8] When a participant completes the questionnaire the values of their responses are then summed to give a final score between 0 and 180. Using the GHQ scale, the response choices are given values of 0, 0, 1, and 1 respectively.