Purpose: This study investigated the relationship between children's language difficulties and health care costs using the 2004-2012 Longitudinal Study of Australian Children (LSAC).
Method: Language difficulties were defined as scores ≤1.25SD below the standardised mean on measures of directly assessed receptive vocabulary (4-9 years) and teacher-reported language and literacy (10-13 years). Participant data were individually linked to administrative data, which were sourced from Australia's universal subsidised healthcare scheme (Medicare).
Result: It was found that healthcare costs over each 2-year age band were higher for children with language difficulties than without in the 4-5-year-age bracket (mean difference = AU$357, 95%CI $59, $659), in the 6-7-year-age bracket (mean difference = AU$602, 95%CI $136, $1068) and in the 10-11-year-age bracket (mean difference = AU$504, 95%CI $153, $854). Out-of-pocket costs, that is the portion of healthcare costs paid for by the family, were also higher for children with than without language difficulties in the 4-5-year-age bracket (mean difference = AU$123, 95%CI $46, $199), in the 6-7-year-age bracket (mean difference = AU$176, 95%CI $74,278) and in the 10-11-year-age bracket (mean difference = AU$79, 95%CI $6, $152). Medical services accounted for 97% of total healthcare cost differences.
Conclusion: Overall the findings from this study suggest that language difficulties are associated with increased healthcare costs at key developmental milestones, notably early childhood and as a child approaches the teenage years.
Keywords: Language impairment; children; longitudinal.