Indirect costs and cost-effectiveness analysis

Area of Science:

• Health Economics
• Decision Science
• Public Health Policy

Background:

• Cost-effectiveness analyses (CEAs) are crucial for healthcare resource allocation.
• The societal perspective in CEAs incorporates both direct and indirect costs.
• Existing models face challenges in accurately reflecting societal costs.

Purpose of the Study:

• To examine the methodological implications of adopting a societal perspective in CEAs.
• To propose computational procedures for managing indirect costs in complex health intervention planning.
• To clarify the conditions under which cost-effectiveness conclusions are valid from a societal viewpoint.

Main Methods:

• Development of an iterative computational procedure for constraint selection in multi-treatment, multi-illness models.
• Analysis of welfare properties of decision rules under a societal perspective in single-illness, two-treatment models.
• Identification of conditions for maintaining cost-effectiveness validity when switching treatments.

Main Results:

• A proposed iterative procedure helps planners constrain indirect costs while balancing health benefits and cost reductions.
• The societal perspective introduces ambiguities in decision-making for common CEA models.
• Cost-effectiveness conclusions are contingent on not increasing total direct costs when patients switch treatments.

Conclusions:

• Adopting a societal perspective in CEAs requires careful methodological consideration, particularly regarding indirect costs.
• The proposed computational procedure offers a framework for managing societal costs in complex healthcare planning.
• Ensuring no increase in direct costs is critical for the validity of cost-effectiveness findings in simpler decision models.