Treatment gap for anxiety disorders is global: Results of the World Mental Health Surveys in 21 countries

Abstract

Background Anxiety disorders are a major cause of burden of disease. Treatment gaps have been described, but a worldwide evaluation is lacking. We estimated, among individuals with a 12-month DSM-IV anxiety disorder in 21 countries, the proportion who: i) perceived a need for treatment; ii) received any treatment; and (iii) received possibly adequate treatment.

Methods Data from 24 community surveys in 21 countries of the WMH surveys. DSM-IV mental disorders were assessed (WHO Composite International Diagnostic Interview, CIDI 3.0). DSM-IV included PTSD among anxiety disorders, while it is not considered so in the DSM-5. We asked if, in the previous 12 months, respondents felt they needed professional treatment and if they obtained professional treatment (specialized/general medical, complementary alternative medical, or non-medical professional) for “problems with emotions, nerves, mental health, or use of alcohol or drugs”. Possibly adequate treatment was defined as receiving pharmacotherapy (1+ months of medication and 4+ visits to a medical doctor) or psychotherapy, CAM or non-medical care (8+ visits).

Results Of 51,547 respondents (response=71.3%), 9.8% had a 12-month DSM-IV anxiety disorder, 27.6% of whom received any treatment, and only 9.8% received possibly adequate treatment. 41.3% of those with 12-month anxiety perceived a need for care. Lower treatment levels were found for lower income countries.

Conclusions Low levels of service use and a high proportion of those receiving services not meeting adequacy standards for anxiety disorders exist worldwide. Results suggest the need for improving recognition of anxiety disorders and the quality of treatment.