Table 3.
Methodological characteristics and geographic locations of the studies (N = 46).
| Variable | No. of Studies |
|---|---|
| Geographic location | |
| North America | 15∗ |
| Europe | 22 |
| Asia | 5 |
| South America | 0 |
| Oceania | 4 |
| Africa |
1∗ |
| Origin of Sample | |
| Community | 39 |
| Students |
7 |
| Diagnostic criteria | |
| ICD-10 | 11∗ |
| DSM-5 | 2 |
| DSM-IV | 26∗ |
| DSM-III |
11 |
| Decades | |
| 1900 | 6 |
| 2000 | 20 |
| 2010 | 20 |
Note. (∗) indicates studies that included more than one geographic locality and studies that included more than one diagnostic criterion, as explained in methodology.