What should be assessed to determine the success of an intervention?

To determine the success of an intervention, assessing changes in health behavior is essential because this directly reflects whether the intervention achieved its intended goals. Health behaviors encompass a range of actions that individuals take related to their health, such as diet, exercise, medication adherence, and use of healthcare services. By measuring these changes, practitioners can evaluate the effectiveness of the intervention in influencing participants' behaviors in a positive way.

While participant feedback provides insights into their experiences and perceptions of the intervention and staff satisfaction indicates the morale and contentment of those delivering the intervention, these factors do not measure the actual behavioral changes resulting from the intervention itself. Similarly, assessing resources expended can be relevant for logistical and financial aspects but does not indicate the tangible outcomes of the intervention. Collectively, changes in health behavior serve as a direct indicator of whether the intervention has made a meaningful impact on the target population.