PEG Scale Calculator

PEG Scale Calculator for Pain Management. Compare like-for-like assessments and discuss what changed in function as well as the number. Fractional means are retained. A decline does not prove that treatment caused improvement, and no dose recommendation is made.

For shared guidance on choosing a tool and documenting results, read the clinical calculator workflow.

How this calculator works

PEG summarizes pain intensity and interference as a short mean score. The original development study tested the measure in primary-care and ambulatory populations. Source: https://pubmed.ncbi.nlm.nih.gov/19418100/

When to use this calculator

Review comparable follow-up values with the person's functional goals. The page accepts the finalized mean, not individual responses or a raw sum.

Inputs used

  • Final PEG mean, 0-10; source version and time window

Clinical interpretation

Compare like-for-like assessments and discuss what changed in function as well as the number. Fractional means are retained. A decline does not prove that treatment caused improvement, and no dose recommendation is made.

Worked example

A finalized PEG mean changes from 6.0 to 4.5. The decline is 1.5 points, or 25% relative to baseline. That is an arithmetic description, not proof of causation or a universal treatment-response rule.

Limitations and safety notes

Fractional means must not be dropped between rounded bands. The tool does not choose analgesics, dose opioids or diagnose the cause of pain. Missing answers must be handled by the authorized source workflow.

Frequently asked questions

Is 18 a valid PEG input?

No. A raw sum may be on a different range. Obtain the final 0-10 mean first.

References

  • https://pubmed.ncbi.nlm.nih.gov/19418100/

Editorial review and citation methodology

Maintained by the Quick Medical Calculator Editorial Team. Content record date: September 9, 2026. A content date is not evidence of independent clinical review. Individual clinical sign-off is not recorded on this page.

  • Prefer original validation studies for scoring systems and prediction tools.
  • Use current specialty society guidance, transplant allocation policy, public health guidance, or regulator resources when they govern clinical use.
  • Include limitations and safety notes when a calculator is population-specific, context-dependent, or unsuitable as a standalone decision tool.

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