Calculating costs in an economic evaluation is very important. Classify the following costs as direct (D), indirect (ID), or intangible (IT).

Cost Classification Transportation (ambulance or personal auto)

Sick leave

Informal care performed by spouse

Visit to private practitioner

Inpatient hospital stay

Nursing home stay

Reduced productivity at work

Pain and suffering

Home health care services

Diagnostic test Surgical intervention

Grief and anxiety