Patient-reported outcome measures (PROMs) are measurement instruments designed to assess health outcomes as directly reported by patients without interpretation of their responses by clinicians or anyone else.
PROMs could take on many forms, assessing general health or specific symptoms, functional ability, general well being, health-related quality of life, or global quality in life. Some measures are generic, and others are disease or condition specific.
Generic PROMs are designed to assess general aspects of health that are not specific to a particular disease (e.g., EQ-5D, SF-12/36, HUI2/3, WHOQOL, ESAS, QWB, and PROMIS), while disease-specific PROMs assess aspects of health that are specific to a given disease (e.g., WOMAC, AQLQ, EORTC-QLQ-C30, PHQ-9, PAID-5).
Generic and disease-specific PROMs each have their own advantages and disadvantages. For instance, generic PROMs are useful when comparing different groups of patients across different health conditions; however, they may be less sensitive to pick up important changes in specific aspects of health. On the other hand, disease-specific PROMs are not useful in comparing different groups of patients with different diseases; however, they are more likely to be sensitive to specific changes in health. Given these advantages and disadvantages, it is often recommended that a generic and a disease-specific PROM should be used together.
PROMs could be profile or preference-based:
Profile measures (e.g., SF-12/36, WHOQOL) are used to determine the position of some characteristic on specific domains, which are measured by multiple items. Preference-based measures (e.g., EQ-5D, HUI-1/2, SF-6D) are used to place a value on health states or conditions. Profile measures are useful in various applications that aim to assess health or an aspect of it from a patient perspective in the evaluation of treatments or services. While preference-based measures could be used for these purposes as well, they are also used to generate utility values to calculate quality-adjusted life years (QALYs) that are used in economic analysis of health interventions.
Visit our EQ-5D demo page to see an example of how to complete a generic, health-related quality of life, preference-based PROM.