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UID:pretalx-2026-7DHYFB@conferences.acspri.org.au
DTSTART;TZID=AEST:20261125T113000
DTEND;TZID=AEST:20261125T114500
DESCRIPTION:Background: Children's screen time has been shown to vary by fa
 mily structure\, but evidence remains cross-sectional\, making it difficul
 t to determine whether family structure drives these differences or whethe
 r pre-existing sociodemographic inequalities do. No study has examined how
  screen time changes following family transitions (from two-parent to sing
 le-parent and vice versa).\nResearch question: What is the effect of famil
 y structure and its transition on children's screen time? Does a transitio
 n in family structure cause a change in children's screen time?\nDesign\, 
 Setting\, and Participants: This pre-registered study (OSF: https://doi.or
 g/10.17605/OSF.IO/U3JB4) used data from the Longitudinal Study of Australi
 an Children (LSAC)\, a nationally representative cohort study that has fol
 lowed children since 2003 with biennial data collection. The analytic samp
 le comprised children aged approximately 6–13 years\, drawn from the Bab
 y cohort (waves 4–7) and the Kindergarten cohort (waves 2–5). Missing 
 data were handled using multiple imputation via predictive mean matching (
 mice package). Associations between family structure\, number of siblings\
 , and children's screen time were examined using multilevel mixed-effects 
 models\, with observations nested within children and children nested with
 in cohorts\, adjusted for sociodemographic covariates. Because children wh
 o experience household transitions may differ systematically from those in
  stable households\, propensity score matching was used to match transitio
 ned children with comparable peers in stable households\, based on age\, s
 ex\, socioeconomic position (SEIFA)\, Indigenous status\, number of siblin
 gs\, and home language. Using these matched samples\, piecewise linear mix
 ed-effects models were then estimated separately for single-parent-to-two-
 parent and two-parent-to-single-parent transitions\, to assess whether scr
 een time changed following family structure transitions.\nMain Outcomes an
 d Measures: Children's weekly screen time (total minutes per week) was ass
 essed via parent report and summed across three domains: television viewin
 g\, video game use\, and computer or other electronic media use.\nExposure
  Variable: Family structure was defined by the number of resident parental
  figures (biological\, adoptive\, or foster) responsible for caregiving\, 
 classified as two-parent (≥2) or single-parent (1). Family transitions w
 ere identified by comparing family-type classification across consecutive 
 waves.\nResults: A total of 9043 children were included (mean age\, 6.86 y
 ears\; 51% male\; 85% in two-parent households). Living in a single-parent
  household was strongly associated with higher screen time before adjustme
 nt (β = 89.80 min/wk\; 95% CI\, 69.28–110.32) but was not significant a
 fter full adjustment for sociodemographic factors (β = 11.98 min/wk\; 95%
  CI\, −7.41 to 31.37)\, with maternal education accounting for most of t
 he attenuation. Each additional sibling was independently associated with 
 lower screen time (β = −22.71 min/wk\; 95% CI\, −30.18 to −15.25). 
 Family transitions showed no significant immediate effect on screen time (
 two-to-single: β = 18.45 min/wk\; 95% CI\, −94.48 to 131.39\; single-to
 -two: β = −49.47 min/wk\; 95% CI\, −247.58 to 148.64)\, with parallel
  trajectories before and after transition.\nConclusions and Relevance: The
  association between family structure and children's screen time is largel
 y explained by sociodemographic factors. Transitions in family structure d
 o not produce significant changes in screen time at the time of transition
 . Interventions to reduce screen time need not target family structure or 
 its transitions\; rather\, they should address sociodemographic inequaliti
 es and account for the role of siblings.
DTSTAMP:20261013T070012Z
LOCATION:Sutherland Room
SUMMARY:Changes in Family Structure and Children's Screen Time: A Longitudi
 nal Study of Australian Children - Nigusie Shifera Aylie\, Rebecca Pagano\
 , Taren Sanders
URL:https://conferences.acspri.org.au/2026/talk/7DHYFB/
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