title: Individual and household predictors of adolescents' adherence to a web-based intervention.
abstract: BACKGROUND
  Adherence to e-health obesity interventions is a significant challenge.
  
  
  OBJECTIVE
  We examined the individual and household predictors of adolescents' adherence to a Web-based lifestyle intervention.
  
  
  METHODS
  One hundred sixty overweight/obese adolescents and one of their parents enrolled in the 8-month e-health intervention. Structural equation modeling was used to examine individual factors from the theory of planned behavior and self-determination theory and household factors (food/soda availability, parenting, environment) that predict adolescents' adherence to components of the intervention.
  
  
  RESULTS
  We explained 10.8 to 36.9% of the total variance in adherence to components of the intervention. Intrinsic motivation and parenting practices and styles directly predicted adherence. Relatedness and autonomy support indirectly predicted adherence via intrinsic motivation. Finally, household income modulated these effects.
  
  
  CONCLUSIONS
  Taking a self-regulatory perspective (i.e., accounting for intrinsic motivation) contributes to our understanding of intervention adherence, but the household environment may play a greater role in facilitating adolescent behavior change.
authors.affiliation: Child and Family Research Institute and School of Population and Public Health, University of British Columbia, F508-4480 Oak Street, Vancouver, BC, V6H 3V4, Canada, lmasse@cfri.ubc.ca.
authors.forename: Louise C
authors.initials: LC
authors.lastname: Mâsse
authors.forename: Allison W
authors.initials: AW
authors.lastname: Watts
authors.forename: Susan I
authors.initials: SI
authors.lastname: Barr
authors.forename: Andrew W
authors.initials: AW
authors.lastname: Tu
authors.forename: Constadina
authors.initials: C
authors.lastname: Panagiotopoulos
authors.forename: Josie
authors.initials: J
authors.lastname: Geller
authors.forename: Jean-Pierre
authors.initials: JP
authors.lastname: Chanoine
mesh_terms: D000293:Adolescent; D000294:Adolescent Behavior / Q000523:psychology*; D000328:Adult; D001521:Behavior Therapy / Q000379:methods*; D002648:Child; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008019:Life Style; D008297:Male; D008875:Middle Aged; D009765:Obesity / Q000628:therapy*; D050177:Overweight / Q000628:therapy*; D010290:Parents; D010349:Patient Compliance / Q000523:psychology*; D017216:Telemedicine / Q000379:methods*; D016896:Treatment Outcome