Informal Caregiving: Health System Cost Implications

Background: Informal caregiving is seen as a low-cost substitute for care provided by health care professionals. However, caregiving is known to negatively impact caregivers' health and, subsequently, their health care use and costs. This could potentially offset the caregivers' contributions to the health care system.

Objective: We examined the impact of caregiving on costs associated with caregivers' use of publicly funded health care services in Ontario, Canada, in comparison with non-caregivers.

Methods: We included Ontarians who participated in the Canadian Community Health Survey-Healthy Aging Supplement Survey of 2008/09 and linked responses to health care administrative databases. A difference-in-differences design was used to capture differences in caregivers' and non-caregivers' total health care costs 1 and 2 years before and after caregiving start date. Generalized Linear Models were used to model the total health care costs.

Results: The sample size was 4275 with 1265 caregivers and 3010 non-caregivers. We found that while health care utilization increased over time, it increased by a lesser amount for caregivers than non-caregivers. Adjusted total health care costs for caregivers were 11.32% (SE = 0.05, ρ = 0.02) lower than non-caregivers 2 years into caregiving.

Conclusions: Our study reveals a critical gap in policy, practice, and research driven by a lack of routine data collection and caregiver identification. It also highlights the need for additional longitudinal research focusing on caregivers' objective health.