title: Short persistent sleep duration is associated with poor receptive vocabulary performance in middle childhood.
abstract: The aim of this study was to examine whether short sleep duration is associated with poor receptive vocabulary at age 10 years. In the Quebec Longitudinal Study of Child Development, parents reported their children's nocturnal sleep duration annually from ages 2.5 to 10 years, and children were assessed for receptive vocabulary using the Peabody Picture Vocabulary Test-Revised (PPVT-R) at ages 4 and 10 years. Groups with distinct nocturnal sleep duration trajectories were identified and the relationships between sleep trajectories and poor PPVT-R performance were characterized. In all, 1192 children with available sleep duration and PPVT-R data participated in this epidemiological study. We identified four longitudinal nocturnal sleep trajectories: short persistent sleepers (n = 72, 6.0%), short increasing sleepers (n = 47, 3.9%), 10-h sleepers (n = 628, 52.7%) and 11-h sleepers (n = 445, 37.3%). In all, 14.8% of the children showed poor PPVT-R performance at age 10 years. Nocturnal sleep trajectories and poor PPVT-R performance at age 10 were associated significantly (P = 0.003). After adjusting for baseline receptive vocabulary performance at age 4 and other potential confounding variables, logistic regression analyses suggest that, compared to 11-h sleepers, the odds ratio of presenting poor receptive vocabulary at age 10 was 2.67 [95% confidence interval (CI): 1.24-5.74, P = 0.012] for short persistent sleepers and 1.66 (95% CI: 1.06-2.59, P = 0.026) for 10-h sleepers. These results corroborate previous findings in early childhood, and indicate that short sleep duration is associated with poor receptive vocabulary during middle childhood.
authors.affiliation: INSERM U669, Paris, France.|Structure Fédérative de Recherche du pôle Santé, SFR_ICAT, Angers, France.|DRCI Data management, CHU Angers, Angers, France.|UMR 892, University of Angers, 49 100, France.
authors.forename: Valerie
authors.initials: V
authors.lastname: Seegers
authors.affiliation: Research Unit on Children's Psychosocial Maladjustment, Laval University, Laval, Canada.|Department of Psychoeducation, Université du Québec à Trois-Rivières, Trois-Rivières, Canada.
authors.forename: Evelyne
authors.initials: E
authors.lastname: Touchette
authors.affiliation: Research Unit on Children's Psychosocial Maladjustment, Laval University, Laval, Canada.|Department of Psychology, Laval University, Laval, Canada.
authors.forename: Ginette
authors.initials: G
authors.lastname: Dionne
authors.affiliation: Centre for Advanced Research in Sleep Medicine, Sacré-Coeur Hospital, Montreal, Canada.|Department of Psychiatry, University of Montreal, Montreal, Canada.
authors.forename: Dominique
authors.initials: D
authors.lastname: Petit
authors.affiliation: Department of Psychiatry, University of Montreal, Montreal, Canada.|Research Unit on Children's Psychosocial Maladjustment, University of Montreal, Montreal, Canada.|School of Psychoeducation, University of Montreal, Montreal, Canada.
authors.forename: Jean R
authors.initials: JR
authors.lastname: Seguin
authors.affiliation: Centre for Advanced Research in Sleep Medicine, Sacré-Coeur Hospital, Montreal, Canada.|Department of Psychiatry, University of Montreal, Montreal, Canada.
authors.forename: Jacques
authors.initials: J
authors.lastname: Montplaisir
authors.affiliation: Research Unit on Children's Psychosocial Maladjustment, University of Montreal, Montreal, Canada.|School of Psychoeducation, University of Montreal, Montreal, Canada.
authors.forename: Frank
authors.initials: F
authors.lastname: Vitaro
authors.affiliation: INSERM U669, Paris, France.
authors.forename: Bruno
authors.initials: B
authors.lastname: Falissard
authors.affiliation: Research Unit on Children's Psychosocial Maladjustment, Laval University, Laval, Canada.|Department of Psychology, Laval University, Laval, Canada.|Institute of Genetic, Neurobiological and Social Foundations of Child Development, Tomsk State University, Russian Federation.
authors.forename: Michel
authors.initials: M
authors.lastname: Boivin
authors.affiliation: Research Unit on Children's Psychosocial Maladjustment, University of Montreal, Montreal, Canada.|Institute of Genetic, Neurobiological and Social Foundations of Child Development, Tomsk State University, Russian Federation.|CHU Ste-Justine Research Centre, Montreal, Canada.|Departments of Paediatrics and Psychology, University of Montreal, Montreal, Canada.|School of Public Health and Population Sciences, University College Dublin, Dublin, Ireland.
authors.forename: Richard E
authors.initials: RE
authors.lastname: Tremblay
mesh_terms: D002648:Child; D002657:Child Development; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D016017:Odds Ratio; D010290:Parents; D011792:Quebec; D012890:Sleep / Q000502:physiology*; D012892:Sleep Deprivation / Q000523:psychology*; D013997:Time Factors; D014825:Vocabulary
keywords: childhood; development; language; sleep duration; trajectories; vocabulary