Table 3.
Percentage of Individuals in 5 Classes with Gilles de la Tourette Syndrome (GTS), Chronic Tics (CT) Obsessive-Compulsive Disorder (OCD) or Attention-Deficit Hyperactivity Disorder (ADHD) Diagnoses (N=952) 1 in the 5-Class Solution.
| Classes | GTS | CT | OCD | S-OCD | ADHD-C | ADHD-HI | ADHD-IA | Total |
|---|---|---|---|---|---|---|---|---|
| Minimal Disorder (I) | 0% | 13% | 0% | 15% | 9% | 0% | 2% | 29.5% |
| Chronic Tics (II) | 0% | 100% | 53% | 17% | 29% | 9% | 15% | 3.7% |
| GTS + S-OCD (III) | 100% | 0% | 0% | 100% | 36% | 6% | 4% | 11.2% |
| GTS+OCD (IV) | 81% | 0% | 47% | 0% | 0% | 6% | 12% | 31.5% |
| GTS+OCD+ADHD (V) | 98% | 0% | 73% | 0% | 100% | 0% | 0% | 24.1% |
| Class I | Class II | Class III | Class IV | Class V | Total | |||
| Male Sex | 50% | 34% | 67% | 60% | 76%* | 61% | ||
| Age Onset Motor Tics | 9.1 (7.5) | 7.2 (3.5) | 6.4 (2.6) | 7.0 (5.1) | 5.7 (3.1)† | 6.7 (4.6) | ||
| Age Onset Vocal Tics | 11.4 (9.2) | 12.3 (8.8) | 7.3 (3.2) | 7.9 (4.7) | 6.9 (4.6)ϕ | 7.7 (4.9) | ||
| Total | 281 | 35 | 107 | 300 | 229 | 952 | ||
In Class I, for example, no subjects had GTS, 13% had CT, 15% had subclinical OCD, 9% had ADHD combined and 2% had ADHD inattentive, comprising as a whole a minimally affected class. There were a total of 29.5% × 952 = 281 subjects in class I.
S-OCD = Subclinical OCD
ADHD = Attention-Deficit Hyperactivity Disorder (C = combined, HI = Hyperactive-Impulsive, IA = Inattentive)
Non-parametric test of trend; z = −5.88, p < 0.001
Non-parametric test of trend; z = −4.11, p < 0.001
Non-parametric test of trend; z = −3.36, p = 0.001