total health expenditure and 72% of expenditure growth for all children. Average annual expenditure growth per CSHCN is 6.4%, with office-based care, hospital inpatient care and medication the largest contributors (1.6%, 2.8% and 1.2% respectively). Within these three types of care, price was a larger contributor to growth, compared to prevalence and volume (4.9%, 0.1% and 0.7%). There was larger growth in expenditure for physical care compared to mental and well person (4.5%, 1.0%, and 0.1% respectively). The price of inpatient visits for physical conditions is the single most important contributor to expenditure growth (3.6%). Conclusions: The rise in expenditure for CSHCN is substantial over the last 17 years and predominantly driven by the price of hospital inpatient care. Such rises in the cost of hospital care warrant careful examination considering concerns regarding sustainability of health care expenditure.
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