Cgi sjukdomens svårighetsgrad
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The clinical global impression scale and the influence of patient or staff perspective on outcome
- Research article
- Open access
- Published:
BMC Psychiatryvolume 11, Article number: 83 () Cite this article
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Abstract
Background
Since its first publication, the Clinical Global Impression Scale (CGI) has become one of the most widely used assessment instruments in psychiatry. Although some conflicting data has been presented, studies investigating the CGI's validity have only rarely been conducted so far. It is unclear whether the improvement index CGI-I or a difference score of the severity index CGI-Sdif is more valid in depicting clinical change. The current study examined the validity of these two measures and investigated whether therapists' CGI ratings correspond to the view the patients themselves have on their condition.
Methods
Thirty-one inpatients of a German psychotherapeutic hospital suffering from a major depressive disorder (age M = , SD = ; % women) participated. Patients filled in the Beck Depression Inventory (BDI). CGI-S and CGI-I were rated from three perspectives: the treating
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Clinical Global Impression Scales
Description
The CGI is a standardized assessment tool used to measure treatment response among psychiatric patients, and is widely used in psychopharmacology trials as an outcome measure. It is designed to assess global severity of illness and change in the clinical condition over time. It consists of 3 global subscales: Severity of Illness; Global Improvement; Efficacy Index. Item 1 is rated on a seven-point scale (1=normal to 7=extremely ill); item 2 on a seven-point scale (1=very much improved to 7=very much worse); and item 3 on a four-point scale (from 'none' to 'outweighs therapeutic effect'). The CGI is typically administered several times during treatment to track progress. While it takes only about 5 minutes to complete, its use requires knowledge of the patient's clinical history in order for the clinician to determine change in condition.
Subcategory
General/Multiple Disorders