Julia J Rucklidge1, Michelle Downs-Woolley2, Mairin Taylor2,3, Jason A Brown4, Sarah-Eve Harrow5. 1. University of Canterbury, Christchurch, New Zealand julia.rucklidge@canterbury.ac.nz. 2. University of Canterbury, Christchurch, New Zealand. 3. LightBox Psychology Services, Christchurch, New Zealand. 4. Sultan Bin Abdulaziz Humanitarian City, Riyadh, Saudi Arabia. 5. Canterbury District Health Board, Christchurch, New Zealand.
Abstract
OBJECTIVE: To examine the rates of psychiatric comorbidities within a New Zealand sample of adults with ADHD compared with a community control group. METHOD: We merged six data sets to obtain a sample of 222 adults (158 ADHD, 64 controls). Comorbidities were assessed using the Structured Clinical Interview for Diagnostic and Statistical Manual of Mental Disorders (4th ed. text rev. [DSM-IV-TR]) Axis-I disorders. RESULTS: Both groups were equivalent in IQ, socioeconomic status, gender, education, income levels, and age. Lifetime rates of psychiatric disorders were significantly higher in the ADHD group (83%) versus the control group (52%) with higher rates of major depressive disorder (MDD; 65% vs. 36%), social phobia (31% vs. 11%), substance abuse (26% vs. 8%), and alcohol abuse (32% vs. 14%). Within the ADHD group, other than a group difference in specific phobias, there were no gender differences. CONCLUSION: The findings are consistent with international research; adults with ADHD in New Zealand have higher rates of psychiatric disorders than the general population.
OBJECTIVE: To examine the rates of psychiatric comorbidities within a New Zealand sample of adults with ADHD compared with a community control group. METHOD: We merged six data sets to obtain a sample of 222 adults (158 ADHD, 64 controls). Comorbidities were assessed using the Structured Clinical Interview for Diagnostic and Statistical Manual of Mental Disorders (4th ed. text rev. [DSM-IV-TR]) Axis-I disorders. RESULTS: Both groups were equivalent in IQ, socioeconomic status, gender, education, income levels, and age. Lifetime rates of psychiatric disorders were significantly higher in the ADHD group (83%) versus the control group (52%) with higher rates of major depressive disorder (MDD; 65% vs. 36%), social phobia (31% vs. 11%), substance abuse (26% vs. 8%), and alcohol abuse (32% vs. 14%). Within the ADHD group, other than a group difference in specific phobias, there were no gender differences. CONCLUSION: The findings are consistent with international research; adults with ADHD in New Zealand have higher rates of psychiatric disorders than the general population.
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