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Updated: Jun 23, 2026

Using the Threat Probability Task to Assess Anxiety and Fear During Uncertain and Certain Threat
Published on: September 12, 2014
Generalised anxiety disorder
Christopher K Gale1, Jane Millichamp
1Department of Psychological Medicine, Dunedin Medical School, University of Otago, Dunedin, New Zealand.
Introduction:
Up to one in five people may have generalised anxiety disorder (GAD) at some point, and most have other health problems. Less than half of people have full remission after 5 years. GAD may have a genetic component, and has also been linked to previous psychological or other trauma.
Methods And Objectives:
We conducted a systematic review and aimed to answer the following clinical question: What are the effects of treatments for GAD? We searched: Medline, Embase, The Cochrane Library and other important databases up to February 2006 (Clinical Evidence reviews are updated periodically, please check our website for the most up-to-date version of this review). We included harms alerts from relevant organisations such as the US Food and Drug Administration (FDA) and the UK Medicines and Healthcare products Regulatory Agency (MHRA).
Results:
We found 52 systematic reviews, RCTs, or observational studies that met our inclusion criteria.
Conclusions:
In this systematic review we present information relating to the effectiveness and safety of the following interventions: abecarnil, antidepressants (imipramine, opipramol, paroxetine, sertraline, escitalopram and venlafaxine), antipsychotic drugs (trifluoperazine), applied relaxation, benzodiazepines, buspirone, cognitive behavioural therapy, hydroxyzine, kava, and pregabalin.
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