Subtypes versus severity differences in attention-deficit/hyperactivity disorder in the Northern Finnish birth cohort Export

@article{lubke07, abstract = {OBJECTIVE: To investigate whether behaviors of inattention, hyperactivity, and impulsivity among adolescents in Northern Finland reflect qualitatively distinct subtypes of ADHD, variants along a single continuum of severity, or of severity differences within subtypes. METHOD: Latent class models, exploratory factor models, and factor mixture models were applied to questionnaire data of ADHD behaviors obtained from the Northern Finland Birth Cohort (NFBC). Latent class models correspond to qualitatively distinct subtypes, factor analysis corresponds to severity differences, and factor mixture analysis allows for both subtypes and severity differences within subtypes. RESULTS: A comparison of the different models shows that models that distinguish between a low scoring majority class (unaffecteds) and a high scoring minority class (affecteds), and allow for two factors (inattentive, hyperactive-impulsive) with severity differences provide the best fit. CONCLUSIONS: The analysis provides support that a high-scoring minority group (8.8\% of males and 6.8\% of females) likely reflects an ADHD group in the Northern Finland Birth Cohort, whereas the majority of the population falls into a low-scoring group of unaffecteds. Distinct factors composed of items of inattention and hyperactivity-impulsivity are evident for both sexes with considerable variability in severity within each class. Copyright 2007 {\copyright} American Academy of Child and Adolescent Psychiatry.}, address = {UCLA Semel Institute, 760 Westwood Plaza, Los Angeles, CA 90095-1759, United States}, author = {Lubke, G. H. and Muthen, B. and Moilanen, I. K. and Mcgough, J. J. and Loo, S. K. and Swanson, J. M. and Yang, M. H. and Taanila, A. and Hurtig, T. and Jarvelin, M. R. and Smalley, S. L.}, citeulike-article-id = {2220243}, citeulike-linkout-0 = {http://dx.doi.org/10.1097/chi.0b013e31815750dd}, citeulike-linkout-1 = {http://www.scopus.com/record/display.url?view=extended&origin=resultslist&eid=2-s2.0-36349027559}, doi = {10.1097/chi.0b013e31815750dd}, journal = {Journal of the American Academy of Child \& Adolescent Psychiatry}, keywords = {adhd, analysis, class, latent, mplus}, number = {12}, pages = {1584--1593}, posted-at = {2008-01-11 17:38:06}, priority = {3}, title = {Subtypes versus severity differences in attention-deficit/hyperactivity disorder in the Northern Finnish birth cohort}, url = {http://dx.doi.org/10.1097/chi.0b013e31815750dd}, volume = {46}, year = {2007} }

TY - JOUR ID - lubke07 L3 - citeulike-article-id:2220243 N2 - OBJECTIVE: To investigate whether behaviors of inattention, hyperactivity, and impulsivity among adolescents in Northern Finland reflect qualitatively distinct subtypes of ADHD, variants along a single continuum of severity, or of severity differences within subtypes. METHOD: Latent class models, exploratory factor models, and factor mixture models were applied to questionnaire data of ADHD behaviors obtained from the Northern Finland Birth Cohort (NFBC). Latent class models correspond to qualitatively distinct subtypes, factor analysis corresponds to severity differences, and factor mixture analysis allows for both subtypes and severity differences within subtypes. RESULTS: A comparison of the different models shows that models that distinguish between a low scoring majority class (unaffecteds) and a high scoring minority class (affecteds), and allow for two factors (inattentive, hyperactive-impulsive) with severity differences provide the best fit. CONCLUSIONS: The analysis provides support that a high-scoring minority group (8.8% of males and 6.8% of females) likely reflects an ADHD group in the Northern Finland Birth Cohort, whereas the majority of the population falls into a low-scoring group of unaffecteds. Distinct factors composed of items of inattention and hyperactivity-impulsivity are evident for both sexes with considerable variability in severity within each class. Copyright 2007 © American Academy of Child and Adolescent Psychiatry. IS - 12 JF - Journal of the American Academy of Child & Adolescent Psychiatry AD - UCLA Semel Institute, 760 Westwood Plaza, Los Angeles, CA 90095-1759, United States EP - 1593 TI - Subtypes versus severity differences in attention-deficit/hyperactivity disorder in the Northern Finnish birth cohort VL - 46 SP - 1584 KW - adhd KW - analysis KW - class KW - latent KW - mplus AU - Lubke, GH AU - Muthen, B AU - Moilanen, IK AU - Mcgough, JJ AU - Loo, SK AU - Swanson, JM AU - Yang, MH AU - Taanila, A AU - Hurtig, T AU - Jarvelin, MR AU - Smalley, SL PY - 2007/// UR - http://dx.doi.org/10.1097/chi.0b013e31815750dd ER -