Prevalence of generalised anxiety disorder* in previous 12 months, and comorbidity, according to national community surveys. Values are percentages unless stated otherwise
| Singapore3 | Germany4 | Australia5 | US4 | US5 | Europe6 | |
|---|---|---|---|---|---|---|
| Age (years) (No of participants) | 20-59 (n=2847) | 18-64 (n=7124) | >18 (n=10641) | >18 (n=9282) | >18 (n=2657) | >18 (n=21425) |
| Instrument | SCAN | M-CIDI | CIDI 2.1 | CIDI 3.0 | AUADIS | CIDI 3.0 |
| Proportion of participants with GAD | 3.0 | 1.5 | 3.6 | 3.1 | 4.1 | 1.0 |
| Proportion of men (women) | 1.0 (3.6) | 1.0 (2.1) | 3.2 (4.0) | Not reported | 2.8 (5.3) | 0.5 (1.3) |
| Of those with a diagnosis of GAD: | ||||||
| Proportion with any comorbidity | Not reported | 93.1 | 67.8 | 85 | 69.4 | |
| Mood disorder | Not reported | 70.6 | 44.9 | Not reported | Not reported | Not reported |
| Anxiety | Not reported | 55.9 | 37.4 | Not reported | Not reported | Not reported |
| Somatoform | Not reported | 48.1 | Not reported | Not reported | Not reported | Not reported |
| Substance misuse | Not reported | Not reported | 13.3 | Not reported | 23.0 | Not reported |
| Medical condition | 53.9 | Not reported | Not reported | Not reported | Not reported | Not reported |
CIDI=Composite international diagnostic interview; M-CIDI was based on CIDI; 2.1 and 3.1 were later versions of CIDI.
AUADIS=Alcohol use associated disorder interview schedule.
SCAN= Schedule of clinical assessment in neuropsychiatry.
*As diagnosed according to the DSM-IV criteria.