peg_pain_scale: PEG Scale (Pain, Enjoyment, General Activity)

In cliot: Clinical Indices and Outcomes Tools

PEG Scale (Pain, Enjoyment, General Activity)

Description

Calculates the PEG Score, a 3-item scale used to assess chronic pain intensity and interference. It is derived from the Brief Pain Inventory (BPI) and asks patients to rate average pain, interference with enjoyment of life, and interference with general activity over the past week on a scale of 0-10.

Usage

peg_pain_scale(pain_average, enjoyment_of_life, general_activity)

Arguments

pain_average	Numeric (0-10). What number best describes your pain on average in the past week? (0 = No pain, 10 = Pain as bad as you can imagine).
enjoyment_of_life	Numeric (0-10). What number describes how, during the past week, pain has interfered with your enjoyment of life? (0 = Does not interfere, 10 = Completely interferes).
general_activity	Numeric (0-10). What number describes how, during the past week, pain has interfered with your general activity? (0 = Does not interfere, 10 = Completely interferes).

Value

A list containing:

PEG_Score	The calculated score (mean of the 3 items, Range 0-10).
Interpretation	Clinical interpretation of pain impact severity.

References

Krebs EE, Lorenz KA, Bair MJ, et al. Development and initial validation of the PEG, a three-item scale assessing pain intensity and interference. J Gen Intern Med. 2009;24(6):733-738. doi:10.1007/s11606-009-0981-1

Examples

# Example 1: Severe Impact
# Pain 8, Enjoyment 9, Activity 7
# Score = (8+9+7)/3 = 8.0
peg_pain_scale(8, 9, 7)

# Example 2: Mild Impact
# Pain 2, Enjoyment 1, Activity 0
# Score = 1.0
peg_pain_scale(2, 1, 0)

cliot documentation built on Dec. 1, 2025, 1:06 a.m.