Birth weight and stuttering: Evidence from three birth cohorts |
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| Institution: | 1. School of Rehabilitation Sciences, University of East Anglia, Norwich NR4 7TJ, United Kingdom;2. Faculty of Social Sciences, University of East Anglia, Norwich, United Kingdom;1. Erasmus University Medical Center, Rotterdam, The Netherlands;2. Utrecht University, Utrecht, The Netherlands;1. Department of Communication Sciences and Disorders, Louisiana State University, 63 Hatcher Hall, Baton Rouge, LA 70803, USA;2. Department of Communication Sciences and Disorders, The University of Texas at Austin, 1 University Station A1100, Austin, TX 78712, USA;1. Biomedical Engineering Department, Science and Research Branch, Islamic Azad University, Tehran, Iran;2. Electrical and Computer Engineering Department, K.N. Toosi University of Technology, Tehran, Iran;1. Communication, Aging and Neuropsychology Lab (CANlab), Baruch Ivcher School of Psychology, Interdisciplinary Center (IDC) Herzliya, Herzliya, Israel;2. Oral Dynamics Lab, Department of Speech-Language Pathology, University of Toronto, Toronto, Ontario, Canada;3. Toronto Rehabilitation Institute, Toronto, Ontario, Canada;4. Department of Psychology, University of Toronto Mississauga, Mississauga, Ontario, Canada;5. Faculty of Information, University of Toronto, Toronto, Ontario, Canada;6. Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada;7. Rehabilitation Sciences Institute, University of Toronto, Toronto, Ontario, Canada;1. Erasmus University Medical Center, Sophia Children''s Hospital, Department of Otorhinolaryngology, Speech and Hearing Center, Rotterdam, The Netherlands;2. Department of Communication Science and Disorders, University of Pittsburgh, 4033 Forbes Tower, Pittsburgh, PA 15260, USA |
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| Abstract: | PurposePrevious studies have produced conflicting results with regard to the association between birth weight and developmental stuttering. This study sought to determine whether birth weight was associated with childhood and/or adolescent stuttering in three British birth cohort samples.MethodsLogistic regression analyses were carried out on data from the Millenium Cohort Study (MCS), British Cohort Study (BCS70) and National Child Development Study (NCDS), whose initial cohorts comprised over 56,000 individuals. The outcome variables were parent-reported stuttering in childhood or in adolescence; the predictors, based on prior research, were birth weight, sex, multiple birth status, vocabulary score and mother's level of education. Birth weight was analysed both as a categorical variable (low birth weight, <2500 g; normal range; high birth weight, ≥4000 g) and as a continuous variable. Separate analyses were carried out to determine the impact of birth weight and the other predictors on stuttering during childhood (age 3, 5 and 7 and MCS, BCS70 and NCDS, respectively) or at age 16, when developmental stuttering is likely to be persistent.ResultsNone of the multivariate analyses revealed an association between birth weight and parent-reported stuttering. Sex was a significant predictor of stuttering in all the analyses, with males 1.6–3.6 times more likely than females to stutter.ConclusionOur results suggest that birth weight is not a clinically useful predictor of childhood or persistent stuttering. |
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| Keywords: | Birth weight Stuttering Birth cohort |
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