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Social inequalities in childcare quality and their effects on children's development at school entry: findings from the Longitudinal Study of Australian Children
  1. Angela Gialamas1,
  2. Murthy N Mittinty1,
  3. Michael G Sawyer2,3,
  4. Stephen R Zubrick4,
  5. John Lynch1,5
  1. 1School of Population Health, University of Adelaide, Adelaide, South Australia, Australia
  2. 2Research and Evaluation Unit, Women's and Children's Health Network, Adelaide, South Australia, Australia
  3. 3Discipline of Paediatrics, University of Adelaide, Adelaide, South Australia, Australia
  4. 4The University of Western Australia, Telethon Institute for Child Health Research, Perth, Western Australia, Australia
  5. 5School of Social and Community Medicine, University of Bristol, Bristol, UK
  1. Correspondence to Angela Gialamas, School of Population Health, University of Adelaide, Mail Drop 650 550, Adelaide, SA 5005, Australia; angela.gialamas{at}adelaide.edu.au

Abstract

Background Higher quality childcare in the years before school may help narrow developmental gaps between the richest and poorest children in our societies, but specific evidence is limited and inconsistent. We address this issue by examining whether higher quality childcare is associated with better developmental outcomes at school entry for children from lower than higher income families.

Methods The sample from the Longitudinal Study of Australian Children included children attending childcare from 2 to 3 years (n=980–1187, depending on outcome). Childcare quality was measured using carers assessment of their relationship with the child. Children's receptive vocabulary was directly assessed in the child's home, and behavioural difficulties were measured by teachers and parents at 4–5 years. We assessed additive and multiplicative income-related effect measure modification of the quality of carer–child relationship on developmental outcomes.

Results After adjusting for confounding, there was some evidence of effect measure modification on the additive and multiplicative scales of childcare quality by income. Children experiencing higher quality relationships and lower income had almost the same risk of poorer receptive vocabulary as children in higher quality relationships and higher incomes (relative excess risk due to interaction=0.18; 95% CI −0.20 to 0.52), ratio of relative risks=1.11 (1.04 to 1.17)). These patterns were similar for teacher-reported and parent-reported behavioural difficulties.

Conclusions The effects of higher quality childcare, in terms of quality relationships with carers, on children's cognitive and behavioural development at school entry were stronger among children from lower income families. This provides some evidence that higher quality relationships in childcare may be especially important in helping reduce developmental gaps for children from lower income families.

  • CHILD HEALTH
  • SOCIAL INEQUALITIES
  • LONGITUDINAL STUDIES

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