title: Time use clusters of New Zealand adolescents are associated with weight status, diet and ethnicity.
abstract: OBJECTIVE
  To describe New Zealand adolescent time use clusters and correlate cluster profiles.
  
  
  METHODS
  Data were from the cross-sectional 2008/2009 National Survey of Children and Young People's Physical Activity and Dietary Behaviours, which surveyed a random sample of 10-16 year-old New Zealanders (study subset n=679). Time use data were collected using the Multimedia Activity Recall for Children and Adults, and collapsed into 17 age-adjusted variables for sex-specific cluster analysis. Cluster associations with socio-demographic, anthropometric, physical activity and dietary variables were analysed.
  
  
  RESULTS
  Three time use clusters were discovered for both boys and girls. For boys, the Techno-active cluster was characterised by high levels of team sports and TV; the Quiet movers cluster by transport (active and passive) and quiet time; and the Social studious cluster by reading, study activities and social interaction. The boys' clusters were associated with ethnicity. The girls'Social sporty cluster was characterised by sports and social interaction; the Screenie tasker cluster by TV, computer, chores and work; and the Super studious cluster by reading, study and school-based activities. The girls' time use cluster membership was associated with weight status and serves of extra foods.
  
  
  CONCLUSIONS
  Distinct sex-specific time use clusters and correlate profiles exist among NZ adolescents.
  
  
  CONCLUSIONS
  These findings may assist the development of targeted time use interventions to improve adolescent health and well-being.
authors: Health and Use of Time Group, School of Health Sciences, University of South Australia, Adelaide SA 5000. ferke001@mymail.unisa.edu.au
authors: Katia
authors: K
authors: Ferrar
authors: Tim
authors: T
authors: Olds
authors: Carol
authors: C
authors: Maher
authors: Ralph
authors: R
authors: Maddison
mesh_terms: D000293:Adolescent; D000294:Adolescent Behavior / Q000208:ethnology*; D000704:Analysis of Variance; D015992:Body Mass Index; D001835:Body Weight / Q000208:ethnology*; D002648:Child; D016000:Cluster Analysis; D003430:Cross-Sectional Studies; D004032:Diet / Q000208:ethnology* / Q000706:statistics & numerical data; D015444:Exercise; D005247:Feeding Behavior; D005260:Female; D015438:Health Behavior; D006801:Humans; D007407:Interviews as Topic; D008019:Life Style; D008297:Male; D009520:New Zealand / Q000453:epidemiology; D017678:Sex Distribution; D012959:Socioeconomic Factors; D013995:Time