Whole Person Health Index (WPHI) - PROM FAQ
At a Glance
The WPHI was developed by NCCIH and CDC’s National Center for Health Statistics. It combines nine self-reported ratings into one overall score. Higher scores indicate better self-assessed health. NCCIH states that the instrument is free to use. [1]
What Does It Measure?
The nine areas are general health, quality of life, social and family connections, diet, physical activity, managing stress, sleep, meaning and purpose, and managing health. [1]
How Is It Scored?
| Response | Score |
|---|---|
| Poor | 1 |
| Fair | 2 |
| Good | 3 |
| Very Good | 4 |
| Excellent | 5 |
Add the nine response scores, giving a total from 9 to 45. Each item contributes equally; the published calculation does not reverse-score items or transform the sum into a T-score. [1]
Are There Subscales?
The published instrument specifies one overall index, not separately scored subscales. Individual ratings describe the response profile; they are not standalone validated assessments of those domains. The authors caution against using a single item as a substitute for a dedicated domain questionnaire. [2]
How Should Change Be Interpreted?
An increasing total indicates better self-assessed health; a decreasing total indicates worse self-assessed health. [1]
The reviewed publications do not establish a minimal clinically important difference or clinical severity thresholds. Numerical change should not automatically be called clinically significant. The authors report that prediction of future clinical outcomes and responsiveness to interventions have not yet been validated. [2]
How Can Results Be Presented?
The authors illustrate a radar chart showing individual ratings and change over time. It is an example, not a required report format. They also discuss tables and bar charts as presentation options. A profile of item responses should not be labelled as nine separate subscales or converted into unsupported risk bands. [2]
What If Answers Are Missing?
The structural-validity study excluded participants missing any WPHI response. That research decision is not an official clinical missing-answer algorithm. No prorating rule was identified in the sources below; they do not justify treating a missing answer as zero. [3]
What Are the Evidence Limitations?
The structural-validity study found strong internal consistency and evidence of a dominant general factor, although not all criteria for a strict single-factor model were met. Age-related differences in interpretation of the general-health item warrant caution when comparing index scores across age groups. These findings do not establish diagnostic cutoffs or treatment thresholds. [3]
Sources
- NCCIH: The Whole Person Health Index: A New Tool for Human Mechanistic and Clinical Studies.
- Pitcher and Langevin (2026): The Whole Person Health Index: A Self-Reported Tool to Assess Whole Person Health.
- Cibelli Hibben et al. (2026): Assessing the Structural Validity and Measurement Invariance of the Whole Person Health Index.