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Prevalence of attention deficit hyperactivity disorder by age and gender
| Variables | Number of children (n) | ADHD present, n (%) | No ADHD, n (%) | P |
|---|---|---|---|---|
| Age (years) | ||||
| 6 | 40 | 2 (5.0) | 38 (95.0) | 24.130, P<0.001 |
| 7 | 48 | 1 (2.1) | 47 (97.9) | |
| 8 | 41 | 6 (14.6) | 35 (85.4) | |
| 9 | 31 | 6 (19.4) | 25 (80.6) | |
| 10 | 37 | 6 (16.2) | 31 (83.8) | |
| 11 | 27 | 3 (11.1) | 24 (88.9) | |
| 12 | 4 | 3 (75.0) | 1 (25.0) | |
| Gender | ||||
| Male | 119 | 21 (17.6) | 98 (82.4) | 8.035, P=0.005 |
| Female | 109 | 6 (5.5) | 103 (94.5) |
ADHD=Attention deficit hyperactivity disorder
