Objective: Previous work has shown thatchildhood anxiety disorders are unique antecedents for panicdisorder. The current study examined both childhood and adultcomorbid disorders as potential antecedent disorders to panicdisorder in a large sample of nonreferred adults.
Methods: Subjects were 1018 adults with (N = 58)and without (N = 960) panic disorder who were derived from a sampleoriginally ascertained through family studies of probands withand without attention-deficit/hyperactivity disorder (ADHD); datawere obtained from 1988 to 1996. Classification and regressiontrees (CART) analysis was used to examine anxiety and nonanxietydisorders antecedent to panic disorder.
Results: CART analysis showed that separationanxiety disorder, social phobia, and simple phobia were uniquepredictors of subsequent panic disorder.
Conclusion: These results support and expandpreviously reported findings in referred samples documenting thatcomorbid anxiety disorders are unique antecedent risk factors forpanic disorder.
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