| Overall | Employed or self-employed | All other respondents | |||||||||
| % | (SE) | (n) | % | (SE) | (n) | % | (SE) | (n) | χ2§ | p Value | |
| Belgium | 4.1 | (1.5) | (486) | 3.7 | (1.5) | (347) | 4.8 | (2.5) | (139) | 0.0 | 0.86 |
| Colombia | 1.9† | (0.5) | (1731) | 1.9† | (0.6) | (790) | 1.9† | (0.6) | (941) | 0.0 | 0.92 |
| France | 7.3‡ | (1.8) | (727) | 6.3 | (1.7) | (533) | 10.0 | (3.6) | (194) | 0.9 | 0.35 |
| Germany | 3.1 | (0.8) | (621) | 3.5 | (1.1) | (432) | 2.1 | (0.8) | (189) | 1.2 | 0.28 |
| Italy | 2.8 | (0.6) | (853) | 3.4 | (0.7) | (569) | 1.6† | (0.7) | (284) | 2.7 | 0.10 |
| Lebanon | 1.8† | (0.7) | (595) | 0.9† | (0.5) | (305) | 2.8 | (1.4) | (290) | 2.9 | 0.09 |
| Mexico | 1.9† | (0.4) | (1736) | 2.4 | (0.7) | (749) | 1.5† | (0.4) | (987) | 1.0 | 0.32 |
| Netherlands | 5.0 | (1.6) | (516) | 4.9 | (1.9) | (389) | 5.3 | (2.8) | (127) | 0.1 | 0.79 |
| Spain | 1.2† | (0.6) | (960) | 1.3 | (0.6) | (574) | 1.0† | (0.8) | (386) | 0.2 | 0.63 |
| USA | 5.2 | (0.6) | (3197) | 4.5* | (0.7) | (2387) | 7.2‡ | (1.2) | (810) | 5.5 | 0.021 |
| Total | 3.4 | (0.4) | (11 422) | 3.5 | (0.4) | (7075) | 3.3 | (0.5) | (4347) | 0.0 | 0.99 |
*Significant difference in prevalence between employed and not employed at the 0.05 level, two-sided test.
†The upper end of the 95% confidence interval of this estimate is below the prevalence estimate for the total sample.
‡The lower end of the 95% confidence interval of this estimate is above the prevalence estimate for the total sample.
§The prevalence estimate for the USA here is somewhat different from the estimate given in a previous report17 because a somewhat different imputation equation was used in the analyses reported here in order to be consistent with the equation used in the other WMH countries.
ADHD, attention-defecit/hyperactivity disorder; SE, standard error.