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Table 4 Associations between joint physical-activity/screen-time trajectories and socio-emotional outcomes (SDQ)

From: Joint physical-activity/screen-time trajectories during early childhood: socio-demographic predictors and consequences on health-related quality-of-life and socio-emotional outcomes

  SDQ - total score SDQ - hyperactivity SDQ - peer problems SDQ - conduct problems SDQ - emotional problems
β 95% CI ES p β 95% CI ES p β 95% CI ES p β 95% CI ES p β 95% CI ES p
B-cohort (0–5 years)
Joint trajectories (Reference: Increasing activity-low screen)
Low activity- low screen −0.22 −0.65 – 0.21 −0.05 .313 −0.03 − 0.23 – 0.17 −0.01 .776 −0.08 − 0.22 – 0.06 −0.05 .290 −0.06 − 0.23 – 0.11 −0.03 .503 −0.06 − 0.21 – 0.08 −0.04 .388
Low activity- increasing screen 0.69a 0.19–1.19 0.15 .007 0.36a 0.13–0.59 0.18 .002 0.13a −0.03 – 0.29 0.09 .112 0.13a −0.07 – 0.33 0.08 .193 0.07b −0.10 – 0.23 0.05 .430
Cases 2218 2218 2219 2219 2219
R2 / adjusted R2 .103 / .098 .076 / 0.071 .055 / 0.050 .054 / 0.050 .041 / 0.036
B K-cohort (4–9 years)
Joint trajectories (Reference: Increasing activity-low screen)
Low activity- low screen 0.46 −0.03 – 0.94 0.09 .068 0.07 − 0.16 – 0.29 0.03 .570 0.24 0.09–0.40 0.16 .002 0.00 − 0.14 – 0.14 0.00 .999 0.15 − 0.02 – 0.32 0.09 .086
Low activity- increasing screen 0.74 0.18–1.30 0.15 .010 0.24 − 0.02 – 0.50 0.10 .070 0.39b 0.21–0.57 0.25 <.001 − 0.03 − 0.19 – 0.13 −0.02 .702 0.14 − 0.05 – 0.33 0.08 .152
Cases 2062 2062 2062 2062 2063
R2 / adjusted R2 .135 / .131 .111 / .106 .077 / .072 .065 / .060 .076 / .071
  1. LSAC data, Waves 1–3. SDQ Strength and Difficulties Questionnaire. Unstandardized coefficients from ordinary least square regression models. All models control for child’s gender (male/female), age (in months), Indigenous background (yes/no), birth weight at or below 2.5 kg. (yes/no), and area-level socio-economic background (measured by the Socio-Economic Index for Areas), main caregiver’s mental health (measured by the Kessler 6 scale), main language spoken at home (English/other), weekly parental income (adjusted to 2008 prices using the Consumer Price Index), and whether the study child has siblings (yes/no) and two biological parents (yes/no) in the household. a statistically significantly different from coefficient on low activity-low screen (p < 0.05) in a Wald test, or b trending towards being significantly different (p < 0.1). ES Effect size, calculated as β × (SDx/SDy)
  2. Bold data is statistically significant