| Individual level | National level (in million of days) | (n) | |||||||||||||||
| Absenteeism | Quantity | Quality | Total | Absenteeism | Quantity | Quality | Total | ||||||||||
| Days | (SE) | Days | (SE) | Days | (SE) | Days | (SE) | Days | (SE) | Days | (SE) | Days | (SE) | Days | (SE) | ||
| Belgium | 10.8 | (15.1) | 18.3 | (28.9) | 9.4 | (9.4) | 16.5 | (23.8) | 1.1 | (1.6) | 1.9 | (3.0) | 1.0 | (1.0) | 1.7 | (2.5) | (347) |
| Colombia | 21.9* | (9.4) | 14.3 | (9.9) | 13.0 | (9.6) | 29.4* | (11.9) | 6.2* | (2.7) | 4.1 | (2.8) | 3.7 | (2.7) | 8.3* | (3.4) | (790) |
| France | −1.0 | (3.9) | 24.9 | (27.7) | 20.1 | (12.9) | 20.1 | (17.5) | −1.0 | (4.0) | 25.5 | (28.3) | 20.6 | (13.2) | 20.6 | (17.9) | (533) |
| Germany | 13.3 | (14.4) | −3.6 | (4.9) | 3.9 | (4.6) | 13.6 | (14.6) | 10.6 | (11.5) | −2.8 | (3.9) | 3.1 | (3.7) | 10.8 | (11.6) | (432) |
| Italy | 7.7 | (9.5) | 25.6* | (12.6) | 6.4 | (6.8) | 22.2 | (13.9) | 4.0 | (5.0) | 13.4* | (6.6) | 3.3 | (3.6) | 11.6 | (7.2) | (569) |
| Lebanon | 5.8 | (9.8) | 30.7 | (26.8) | −4.1 | (4.0) | 19.4 | (13.3) | 0.1 | (0.1) | 0.4 | (0.4) | −0.1 | (0.1) | 0.3 | (0.2) | (305) |
| Mexico | 5.0 | (4.8) | 5.5 | (6.9) | −0.9 | (1.0) | 6.1 | (6.7) | 2.4 | (2.3) | 2.6 | (3.3) | −0.4 | (0.5) | 2.9 | (3.2) | (749) |
| Netherlands | −8.8 | (14.2) | −37.3 | (16.8) | −8.2 | (4.7) | −28.4 | (15.8) | −2.2 | (3.5) | −9.3* | (4.2) | −2.0 | (1.2) | −7.0 | (3.9) | (389) |
| Spain | −2.8 | (2.5) | 3.5 | (8.8) | 7.5 | (7.8) | 1.1 | (8.1) | −0.4 | (0.3) | 0.5 | (1.2) | 1.0 | (1.0) | 0.1 | (1.1) | (574) |
| USA | 10.0* | (4.6) | 29.1* | (9.0) | 20.6* | (5.9) | 28.3* | (8.4) | 37.0* | (16.9) | 107.5* | (33.4) | 76.1* | (21.9) | 104.7* | (31.2) | (2387) |
| All countries | 8.4* | (2.7) | 21.7* | (5.6) | 13.6* | (3.2) | 22.1* | (4.8) | 54.8* | (17.7) | 141.3* | (36.7) | 88.6* | (20.9) | 143.8* | (31.5) | (7075) |
*Significant at the 0.05 level, two-sided test.
†Estimates are based on linear regression equations in which the role performance outcomes are regressed on a dummy predictor variable that distinguishes workers estimated to have ADHD from all other workers, controlling for age, gender, education and occupation.
ADHD, attention-defecit/hyperactivity disorder; SE, standard error.