Table 1.

MTFS Enrichment Sample weighted prevalence rates for forty-three ADHD, ODD, and CD criteria in 14-year-old males (N = 478) based on combined caregiver and child self-reports.

DSM-IV criteria	Prevalence
Attention Deficit Hyperactivity Disorder
A 1. ADHD Inattention
a. Makes careless mistakes	42.4%
b. Difficulty sustaining attention	32.8%
c. Often does not seem to listen	21.3%
d. Difficulty following through on instructions	25.1%
e. Difficulty organizing tasks	34.9%
f. Avoids mental effort	23.2%
g. Often loses necessary items	26.8%
h. Often easily distracted	48.0%
i. Often forgetful	35.9%
2. ADHD Hyperactivity/Impulsivity
Hyperactivity
a. Often fidgets or squirms	37.2%
b. Difficulty remaining seated	24.6%
c. Inappropriate running about	12.3%
d. Difficulty playing quietly	19.8%
e. Often “on the go”	21.2%
f. Often talks excessively	25.5%
Impulsivity
g. Often blurts out answers	16.2%
h. Difficulty awaiting turn	9.3%
i. Often interrupts or intrudes	20.0%
B. Onset before age 7	61.3%
Impairment: multiple settings	50.7%
Oppositional Defiant Disorder
1. Often loses temper	29.9%
2. Often argues with adults	21.7%
3. Defies adults’ requests	15.8%
4. Deliberately annoys people	31.5%
5. Blames others for mistakes	32.4%
6. Touchy/easily annoyed by others	16.3%
7. Often angry and resentful	12.6%
8. Often spiteful and vindictive	6.9%
Impairment: multiple settings	37.1%
Duration of 6 months or more	64.7%
Conduct Disorder
1. Often bullies, threatens, or intimidates	3.6%
2. Often initiates physical fights	7.9%
3. Used a weapon with potential for harm	14.6%
4. Cruel to people	4.6%
5. Cruel to animals	10.8%
6. Sets fires to cause damage	4.6%
7. Deliberately destroyed property	7.9%
8. Broken into house, car, building	0.7%
9. Lies to con others	26.9%
10. Stolen nontrivial items	6.2%
11. Stays out late before age 13	2.0%
12. Truant before 13	0.8%
13. Impairment – multiple settings	22.7%

Note: Prevalence rates are based on number of definite criteria.