Table 2.
Estimated prevalence and cases of adult ADHD in 2020, by age group
| Age group (in years) |
Persistent adult ADHD |
Symptomatic adult ADHD |
||
|---|---|---|---|---|
|
Prevalence (%) |
Cases (million) |
Prevalence (%) |
Cases (million) |
|
| 18-24 |
5.05 (3.12-8.07) |
42.39 (26.20-67.73) |
8.99 (6.12-13.03) |
75.52 (51.40-109.38) |
| 25-29 |
4.00 (2.49-6.35) |
23.77 (14.82-37.77) |
8.27 (5.74-11.78) |
49.17 (34.11-70.04) |
| 30-34 |
3.29 (2.02-5.31) |
19.92 (12.25-32.15) |
7.70 (5.33-11.01) |
46.65 (32.28-66.68) |
| 35-39 |
2.70 (1.61-4.51) |
14.74 (8.78-24.55) |
7.18 (4.87-10.45) |
39.10 (26.55-56.95) |
| 40-44 |
2.22 (1.26-3.88) |
10.97 (6.24-19.14) |
6.68 (4.39-10.06) |
33.00 (21.66-49.66) |
| 45-49 |
1.82 (0.98-3.37) |
8.74 (4.69-16.16) |
6.22 (3.90-9.78) |
29.82 (18.70-46.89) |
| 50-54 |
1.49 (0.75-2.96) |
6.66 (3.34-13.18) |
5.79 (3.44-9.59) |
25.81 (15.32-42.76) |
| 55-59 |
1.22 (0.57-2.61) |
4.75 (2.21-10.11) |
5.39 (3.01-9.46) |
20.89 (11.66-36.70) |
| 60+ |
0.77 (0.30-1.96) |
7.91 (3.11-20.20) |
4.51 (2.15-9.32) |
46.36 (22.06-95.80) |
| Overall (18+) | 2.58 (1.51-4.45) | 139.84 (81.64-240.99) | 6.76 (4.31-10.61) | 366.33 (233.75-574.85) |