What is the standard approach to discounting in economic evaluations?

What is the standard approach to discounting in economic evaluations?

• A. Future costs and outcomes are ignored.
• B. Discount future costs and outcomes to present value using a specified rate.
• C. Discount only costs, not outcomes.
• D. Discounting is optional.

Answer: (B)

Discounting reflects time preference: people value costs and benefits received today more than those in the future. In economic evaluations, future costs and future health outcomes are converted to their present value by applying a discount rate. This standard approach keeps costs and effects comparable over time and recognizes the opportunity cost of capital and other resources tied up in the future. The way it works is simple in principle: you bring any future amount back to present value using the chosen discount rate, so decisions compare present values rather than raw future numbers. For both costs and health outcomes, this same principle is applied, because both are valued less as time passes. Using a specified rate ensures consistency across analyses and aligns with guidelines that often specify a historical or country-specific rate and a method (annual compounding, for example). Choosing not to discount, or discounting only one side, would bias results. Ignoring discounting tends to overstate the value of long-term benefits and costs, while discounting only costs can distort cost-effectiveness by under- or over-valuing future effects. In practice, discounting is commonly required and tested in sensitivity analyses, with the rate set according to established guidelines.

Discounting reflects time preference: people value costs and benefits received today more than those in the future. In economic evaluations, future costs and future health outcomes are converted to their present value by applying a discount rate. This standard approach keeps costs and effects comparable over time and recognizes the opportunity cost of capital and other resources tied up in the future.

The way it works is simple in principle: you bring any future amount back to present value using the chosen discount rate, so decisions compare present values rather than raw future numbers. For both costs and health outcomes, this same principle is applied, because both are valued less as time passes. Using a specified rate ensures consistency across analyses and aligns with guidelines that often specify a historical or country-specific rate and a method (annual compounding, for example).

Choosing not to discount, or discounting only one side, would bias results. Ignoring discounting tends to overstate the value of long-term benefits and costs, while discounting only costs can distort cost-effectiveness by under- or over-valuing future effects. In practice, discounting is commonly required and tested in sensitivity analyses, with the rate set according to established guidelines.