Table 3.

Rates of impairment at wave 4 (N=651): Combined youth and adult report^*

12-month (%)	Impairment Level
	At least one intermediate rating	At least two intermediating ratings	At least one severe rating
Substance Use Disorders	18.2	12.8	12.4
Alcohol Abuse	10.4	8.4	7.5
Alcohol Dependence	1.5	0.9	0.8
Nicotine Dependence	4.3	1.1	2.0
Marijuana Abuse	4.4	2.2	2.8
Marijuana Dependence	7.5	4.4	4.3
Other Substance Abuse	0.3	0.3	0.0
Other Substance Dependence	0.8	0.6	0.6
Generalized Anxiety Disorder	4.4	4.3	2.8
Mood Disorders	7.7	7.1	5.7
Major Depressive Disorder	7.5	6.9	5.5
Dysthymic Disorder	0.3	0.3	0.3
Disruptive Behavior Disorders	24.0	18.9	14.0
Attention Deficit/Hyperactivity Disorder	7.7	7.2	5.4
Oppositional Defiant Disorder	13.7	12.9	8.3
Conduct Disorder	12.3	5.2	6.1

^*

Six impairment criteria:

1. Annoyed or upset you in the last year.
2. Kept you from doing things or going places with your family.
3. Kept you from doing things or going places with other children/youths.
4. Made problems with school work or work.
5. Caused your teachers or boss to be annoyed or upset with you.
6. Made you feel bad or upset when the problems were worst.

“Intermediate” rating indicates endorsing “Some of the time” in response to one of six the criteria.“

Severe” rating indicates endorsing “A lot of the time” in response to one of the six criteria.