Table 2.
Estimates of 12-Month and 30-Day Prevalence Estimates and 12-Month to Lifetime and 30-Day to 12-Month Prevalence Ratios of DSM-IV and Composite International Diagnostic Interview Disorders in the Total Samplea
| % (SE) |
||||
|---|---|---|---|---|
| Prevalence |
Prevalence Ratio |
|||
| Disorder | 12-mo | 30-d | 12-mo/Lifetime | 30-d/12-mo |
| Mood disorder | ||||
| Major depressive disorder or dysthymia | 8.2 (0.8) | 2.6 (0.3) | 70.2 (3.1) | 31.8 (2.7) |
| Bipolar I or II disorder | 2.1 (0.2) | 0.7 (0.1) | 72.3 (4.0) | 32.0 (3.7) |
| Any mood disorder | 10.0 (0.8) | 3.1 (0.4) | 69.8 (2.4) | 31.5 (2.5) |
| Anxiety disorder | ||||
| Agoraphobiab | 1.8 (0.2) | 0.8 (0.1) | 74.6 (4.6) | 43.7 (6.7) |
| Generalized anxiety disorder | 1.1 (0.2) | 0.4 (0.1) | 51.2 (5.4) | 35.3 (7.8) |
| Social phobia | 8.2 (0.4) | 4.6 (0.3) | 90.9 (1.7) | 55.7 (3.3) |
| Specific phobia | 15.8 (0.8) | 9.5 (0.6) | 81.9 (1.4) | 60.2 (1.7) |
| Panic disorderc | 1.9 (0.2) | 0.8 (0.1) | 81.7 (3.1) | 40.0 (5.2) |
| Posttraumatic stress disorder | 3.9 (0.4) | 1.6 (0.2) | 78.1 (2.7) | 41.9 (3.1) |
| Separation anxiety disorder | 1.6 (0.2) | 0.6 (0.1) | 20.9 (2.2) | 36.0 (5.5) |
| Any anxiety disorder | 24.9 (0.9) | 14.9 (0.6) | 77.9 (1.3) | 60.1 (1.4) |
| Behavior disorder | ||||
| Attention-deficit/hyperactivity disorder | 6.5 (0.5) | 4.5 (0.3) | 74.6 (2.5) | 68.6 (3.6) |
| Oppositional-defiant disorder | 8.3 (0.7) | 2.9 (0.3) | 66.0 (3.2) | 34.2 (3.6) |
| Conduct disorder | 5.4 (0.8) | 1.5 (0.3) | 78.4 (3.7) | 27.5 (4.5) |
| Eating disorder | 2.8 (0.2) | 1.1 (0.1) | 54.0 (3.1) | 38.8 (4.1) |
| Any behavior disorder | 16.3 (1.1) | 7.6 (0.7) | 72.1 (2.4) | 46.8 (2.6) |
| Substance disorder | ||||
| Alcohol abuse with or without dependence | 4.7 (0.3) | 1.3 (0.1) | 73.6 (2.2) | 27.3 (2.8) |
| Drug abuse with or without dependence | 5.7 (0.5) | 1.6 (0.3) | 64.1 (3.2) | 27.8 (3.3) |
| Any substance disorder | 8.3 (0.5) | 2.6 (0.3) | 73.3 (2.3) | 31.2 (3.0) |
| Total disorders, No. | ||||
| Any | 40.3 (1.2) | 23.4 (1.0) | 79.5 (1.2) | 57.9 (1.7) |
| Exactly 1 | 21.9 (0.8) | 16.4 (0.8) | 66.1 (2.1)d | 43.2 (2.0)e |
| Exactly 2 | 8.7 (0.6) | 4.8 (0.5) | 86.2 (1.9)d | 67.9 (3.0)e |
| ≤3 | 9.8 (0.7) | 2.2 (0.3) | 95.4 (1.2)d | 82.5 (2.7)e |
All disorders other than oppositional-defiant disorder and substance disorders are classified using DSM-IV diagnostic hierarchy rules. Oppositional-defiant disorder is diagnosed with or without conduct disorder. Alcohol and drug abuse are diagnosed with or without dependence. While diagnoses of most disorders are based exclusively on adolescent reports, parent reports are used to make diagnoses of major depressive disorder or dysthymia, oppositional-defiant disorder, conduct disorder, and attention-deficit/hyperactivity disorder. The first 3 of these 4 disorders were assessed in the sample that completed the full parent self-administered questionnaire (n = 6483), whereas attention-deficit/hyperactivity disorder was assessed in both the full self-administered questionnaire sample and in the subsample of parents who completed the short-form self-administered questionnaire (n = 8470). As a result, prevalence estimates of any mood disorder, any behavior disorder, any disorder, and number of disorders are based on 6483 cases.
Agoraphobia is diagnosed without a history of panic disorder.
Panic disorder is assessed with or without agoraphobia.
The percentage of respondents with the number of lifetime disorders indicated in the row who have 1 or more 12-month disorders. For example, 86.2% of the respondents with a lifetime history of exactly 2 disorders had 1 or more disorders in the 12 months before interview.
The percentage of respondents with the number of 12-month disorders indicated in the row who have 1 or more 30-day disorders. For example, 67.9% of the respondents with a 12-month history of exactly 2 disorders had 1 or more disorders in the 30 days before interview.