Table 1.
Studies regarding the prevalence of ADHD in adults ≥50 years
| N | Age; range (years) | Age; mean (years) | Procedure | Measures | Prevalence of ADHD (%) | |
|---|---|---|---|---|---|---|
| Kooij et al15 | 1,813 | 18–75 | – | Interview | ADHD DSM-IV rating scale96 | 1.0–2.5 |
| Michielsen et al16 | 231 | 60–70 71–94 |
71 | Interview | DIVA 2.097 | 4.0 1.1 |
| Das et al18 | 1,907 1,536 |
48–52 68–74 |
50.7 70.6 |
Interview | ASRS screener19 | 6.2 2.2 |
| Guldberg-Kjar and Johansson17 | 1,599 | 65–80 | 72.0 | Questionnaire by postal mail | WURS98 | 3.3 |
Abbreviations: ASRS, Adult ADHD Self-Report Scale; ADHD, attention-deficit/hyperactivity disorder; DIVA, Diagnostic Interview ADHD in adults. Second Edition; DSM-IV, Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition; WURS, Wender Utah Rating Scale.