A 3-Year Panel Study of Mental Disorders Among Adolescents in Taiwan

ArticleinAmerican Journal of Psychiatry 162(7):1344-50 · August 2005with37 Reads
DOI: 10.1176/appi.ajp.162.7.1344 · Source: PubMed
This study investigated the prevalence and changing trends of mental disorders and the effects of gender and urbanization among adolescents in Taiwan. A random sample of seventh-grade students (N=1,070) was recruited from one urban and one rural junior high school in which 1,051 (98.2%) and 1,035 (96.7%) were reassessed in the second and third years, respectively. A two-stage case identification was conducted by mental health professionals with the Schedule for Affective Disorders and Schizophrenia for School-Age Children-Epidemiologic Version, supplemented by information from the Child Behavior Checklist. The weighted 3-month prevalence rates across the 3 consecutive years for overall psychiatric disorders were 20.3%, 22.7%, and 14.8%, respectively. The most prevalent psychiatric condition was attention deficit hyperactivity disorder (ADHD) in the first 2 years and substance use disorders in the third. During the 3 years, the rates for ADHD, specific phobia, and social phobia decreased, and the rates for major depression and substance use disorders, conversely, increased. Although conduct disorder, ADHD, and substance use disorders were more prevalent among boys, the rates for major depression, social phobia, specific phobia, and adjustment disorder were higher among girls. Rural adolescents had higher rates of conduct disorder, oppositional defiant disorder, and substance use disorders than their urban counterparts. Our findings are similar to those of previous studies among adolescents in prevalence rates, changing trends of most mental disorders, and gender effects. The differential changing trends in various diagnostic groups may imply the importance of specific measures for prevention during adolescence.
    • "All unaffected brothers and TD males were also clinically assessed to confirm that they did not have a diagnosis of ASD. All participants and their parents received an interview using the Chinese version of the Kiddie epidemiologic version of the Schedule for Affective Disorders and Schizophrenia (Gau et al. 2005) to exclude any current or lifetime DSM-IV-TR psychiatric disorder. Exclusion criteria for all groups included past or current neurological or severe medical illness (e.g. "
    [Show abstract] [Hide abstract] ABSTRACT: Background: Autism spectrum disorder (ASD) is a highly heritable neurodevelopmental disorder, yet the search for definite genetic etiologies remains elusive. Delineating ASD endophenotypes can boost the statistical power to identify the genetic etiologies and pathophysiology of ASD. We aimed to test for endophenotypes of neuroanatomy and associated intrinsic functional connectivity (iFC) via contrasting male youth with ASD, their unaffected brothers and typically developing (TD) males. Method: The 94 participants (aged 9-19 years) - 20 male youth with ASD, 20 unaffected brothers and 54 TD males - received clinical assessments, and undertook structural and resting-state functional magnetic resonance imaging scans. Voxel-based morphometry was performed to obtain regional gray and white matter volumes. A seed-based approach, with seeds defined by the regions demonstrating atypical neuroanatomy shared by youth with ASD and unaffected brothers, was implemented to derive iFC. General linear models were used to compare brain structures and iFC among the three groups. Assessment of familiality was investigated by permutation tests for variance of the within-family pair difference. Results: We found that atypical gray matter volume in the mid-cingulate cortex was shared between male youth with ASD and their unaffected brothers as compared with TD males. Moreover, reduced iFC between the mid-cingulate cortex and the right inferior frontal gyrus, and increased iFC between the mid-cingulate cortex and bilateral middle occipital gyrus were the shared features of male ASD youth and unaffected brothers. Conclusions: Atypical neuroanatomy and iFC surrounding the mid-cingulate cortex may be a potential endophenotypic marker for ASD in males.
    Full-text · Article · Nov 2016
    • "The K-SADS-E is a semistructured interview scale for the systematic assessment of both lifetime and current (past 6 months) diagnosis of mental disorders, including childhood and current diagnosis of ASD and ADHD. The Child Psychiatry Research Group in Taiwan developed the Chinese K-SADS-E via a two-stage translation [Gau et al., 2005], and the ADHD supplement was modified into adult version by the corresponding author (SSG) [Chang et al., 2013]. The Chinese K-SADS-E and SADS are reliable and valid instruments to assess child [Chiang et al., 2015] and adult [Chang et al., 2013; Lin et al., 2016] psychiatric disorders in Taiwan. "
    [Show abstract] [Hide abstract] ABSTRACT: Objective: Autism spectrum disorder (ASD) and attention deficit hyperactivity disorder (ADHD) are not only often comorbid but also overlapped in behavioral and cognitive abnormalities. Little is known about whether these shared phenotypes are based on common or different underlying neuropathologies. Therefore, this study aims to examine the disorder-specific alterations in white matter (WM) structural property. Method: The three comparison groups included 23 male adults with ASD (21.4 ± 3.1 years), 32 male adults with ADHD (23.4 ± 3.3 years), and 29 age-matched healthy male controls (22.4 ± 3.3 years). After acquisition of the diffusion spectrum imaging (DSI), whole brain tractography was reconstructed by a tract-based automatic analysis. Generalized fractional anisotropy (GFA) values were computed to indicate tract-specific WM property with adjusted P value < 0.05 for false discovery rate correction. Results: Post hoc analyses revealed that men with ASD exhibited significant lower GFA values than men with ADHD and male controls in six identified fiber tracts: the right arcuate fasciculus, right cingulum (hippocampal part), anterior commissure, and three callosal fibers (ventrolateral prefrontal cortex part, precentral part, superior temporal part). There was no significant difference in the GFA values of any of the fiber tracts between men with ADHD and controls. In men with ASD, the GFA values of the right arcuate fasciculus and right cingulum (hippocampal part) were negatively associated with autistic social-deficit symptoms, and the anterior commissure GFA value was positively correlated with intelligence. Conclusions: This study highlights the disorder-specific alteration of the microstructural property of WM tracts in male adults with ASD. Hum Brain Mapp, 2016. © 2016 Wiley Periodicals, Inc.
    Full-text · Article · Sep 2016
    • "Attention deficit hyperactivity disorder (ADHD) is a common neurodevelopmental disorder that begins in childhood [1] . It affects approximately 5% to 7% of school-age children world- wide [2, 3], and a prevalence rate of 7.5% was reported in a study of Taiwan [4]. The core symptoms of ADHD are inattention, hyperactivity, and impulsivity [5]. "
    [Show abstract] [Hide abstract] ABSTRACT: Background Pharmacotherapy is an effective therapeutic option for attention deficit hyperactivity disorder (ADHD). Understanding the patterns of medication treatment is crucial for clinical practice. This study employed nationwide population-based data to elucidate the initiation and persistence of pharmacotherapy (immediate-release methylphenidate [IR–MPH], osmotic controlled-release formulations of methylphenidate [OROS–MPH] and atomoxetine [ATX]) for youths with ADHD in Taiwan. Methods Patients first receiving an ADHD diagnosis at age 18 or younger between January 2000 and December 2009 (n = 112,140; mean age at ADHD diagnosis: 7.7 years) were selected from Taiwan’s National Health Insurance database. All patients were monitored through December 31, 2011, with an average follow-up time of 5.8 years. The initiation of ADHD drug therapy was defined as the first patient prescription, and discontinuation was defined as the cessation of ADHD medication for 180 days or longer. Results Within the first year after ADHD diagnosis, 47.3%, 14.4%, and 0.8% of the patients were prescribed IR–MPH, OROS–MPH, and ATX, respectively. Regarding the patients prescribed IR–MPH, OROS–MPH, and ATX, 17.8%, 12.6%, and 18.8%, respectively, received the prescription only once and never returned for a drug refill, and 51.0%, 38.9%, and 58.8%, respectively, discontinued drug therapy within 1 year after the first prescription. Male sex and neuropsychiatric comorbidities were associated with higher probabilities of being prescribed one of the medications. An older age at first prescription and a higher daily dose of prescription were significant predictors of early discontinuation of ADHD medication. Conclusions The current findings suggest that IR–MPH is the most frequently prescribed drug for ADHD treatment in Taiwan. Patients treated with OROS–MPH possessed the highest persistence rate, whereas those treated with ATX had the lowest persistence rate. The results provide insight into the delivery of pediatric mental health services and have crucial implications for ADHD medication treatment in real clinical settings.
    Full-text · Article · Aug 2016
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