Related Experiment Video
Updated: Feb 10, 2026

Author Spotlight: Quantifying Pain Experience – An Illustrative Approach Using the Pain Body Diagram
Published on: July 7, 2023
A Systematic Review of the Psychometric Properties of the Modified Behavioral Pain Scale (MBPS)
Dianne J Crellin1, Franz E Babl2, Nick Santamaria3
1Department of Nursing, The University of Melbourne, Melbourne, Australia; Murdoch Children's Research Institute, Melbourne, Australia; Royal Children's Hospital, Melbourne, Australia.
Insights
The Modified Behavioral Pain Scale (MBPS) is valid for infant immunization pain but not yet proven for other procedures or age groups. Further research is needed to assess its broader applicability in pediatric pain assessment.
Area of Science:
- Pediatric Pain Assessment
- Psychometric Validation
- Clinical Research
Background:
- Accurate assessment of procedural pain in infants and children is crucial for effective clinical management.
- The Modified Behavioral Pain Scale (MBPS) is utilized for assessing pain during immunizations, but its psychometric properties require rigorous evaluation.
- The applicability of the MBPS beyond immunization pain remains uncertain.
Purpose of the Study:
- To systematically evaluate the psychometric properties of the Modified Behavioral Pain Scale (MBPS).
- To determine the validity and reliability of the MBPS for assessing pediatric procedural pain.
- To provide evidence-based recommendations for the use of the MBPS in clinical and research settings.
Main Methods:
- A comprehensive literature search was conducted to identify psychometric evaluation studies and randomized controlled trials (RCTs) utilizing the MBPS.
- Studies included assessed feasibility, reliability, validity, or utility data for the MBPS in children aged 0-18 years.
- A total of 28 studies (8 psychometric, 20 RCTs) were included in the systematic review.
Main Results:
- The MBPS demonstrated sufficient validity for assessing immunization-related pain in infants aged 2 to 22 months.
- Evidence supporting the psychometric properties of the MBPS in other age groups or for different procedures was insufficient.
- No data were available regarding the clinical utility of the MBPS.
Conclusions:
- The MBPS can be cautiously recommended for assessing immunization pain in young infants.
- The current evidence does not support the use of the MBPS for assessing all types of procedural pain in young children.
- Further studies are required to establish the MBPS's validity across diverse procedures and its ability to differentiate pain from non-pain distress.
Problem:
Clinicians and researchers require a valid way to assess procedural pain experienced by infants and children. The Modified Behavioral Pain Scale (MBPS) has been used to assess immunisation pain. However, it is unknown whether it is valid for this purpose and whether use can be extended to other procedures. The aim of this study was to rigorously assess evidence addressing the psychometric properties of this scale and to provide recommendations for its use.
Eligibility Criteria:
Psychometric evaluation studies reporting feasibility, reliability, validity, or utility data for the MBPS applied to children (birth to 18years) and randomised controlled trials (RCT) using the MBPS were included.
Sample:
Twenty-eight studies (8 psychometric and 20 RCTs) were included.
Results:
Studies were of varying quality. Sufficient data was available to cautiously accept the MBPS as valid for assessing immunisation related pain in infants aged 2 to 22months. There was insufficient data to support the psychometrics in other age groups or in circumstances other than immunisation. There is no data addressing the clinical utility of the MBPS.
Conclusions:
It is not possible at this time to confidently accept the MBPS as suitable for assessing all procedural pain in young children.
Implications:
Studies to evaluate the capacity of the MBPS to assess pain in a range of procedures and to distinguish between pain and non-pain related distress are needed if it is to be recommended.
Related Concept Videos
Review and Preview
Percentiles are a type of fractile that partition data into...
Review and Preview
pH Scale
Random and Systematic Errors
Systematic Sampling Method
Systematic sampling is one of the simplest methods...
Pain

