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Development and psychometric properties of the PROMIS(®) pediatric fatigue item banks
Jin-Shei Lai1, Brian D Stucky, David Thissen
1Department of Medical Social Sciences and Pediatrics, Northwestern University Feinberg School of Medicine, 633 St. Clair Street, #19-039, Chicago, IL, 60611, USA, js-lai@northwestern.edu.
Insights
This study developed two pediatric fatigue item banks, "Tired" and "(Lack of) Energy," within the Patient-Reported Outcomes Measurement Information System (PROMIS). These banks show good psychometric properties for research use in children and adolescents.
Area of Science:
- Pediatric Health Outcomes Research
- Psychometrics
- Health Measurement
Background:
- Pediatric fatigue assessment is crucial for understanding child well-being.
- Existing measures may lack robust psychometric properties for diverse pediatric populations.
- The Patient-Reported Outcomes Measurement Information System (PROMIS) aims to standardize patient-reported outcomes.
Purpose of the Study:
- To develop and validate self-reported pediatric fatigue item banks.
- To establish the psychometric properties of these new PROMIS item banks.
- To create reliable tools for assessing tiredness and energy levels in children.
Main Methods:
- Utilized PROMIS qualitative methodology for item development.
- Conducted field testing with 3,048 participants aged 8-17 years.
- Employed confirmatory factor analysis (CFA), differential item functioning (DIF), and item response theory (IRT) for psychometric evaluation.
Main Results:
- Developed two distinct item banks: Tired (23 items) and (Lack of) Energy (11 items).
- Confirmed two moderately correlated factors underlying fatigue.
- Calibrated item banks using IRT and created short-form versions (10- and 8-items).
- Removed items with high local dependence and gender-based differential item functioning.
Conclusions:
- The PROMIS pediatric fatigue assessment comprises two validated item banks: Tired and (Lack of) Energy.
- Both item banks demonstrate satisfactory psychometric properties.
- These tools are suitable for use in research settings to measure pediatric fatigue.
Purpose:
This paper reports on the development and psychometric properties of self-reported pediatric fatigue item banks as part of the Patient-Reported Outcomes Measurement Information System (PROMIS).
Methods:
Candidate items were developed by using PROMIS qualitative methodology. The resulting 39 items (25 tiredness related and 14 energy related) were field tested in a sample that included 3,048 participants aged 8-17 years. We used confirmatory factor analysis (CFA) to evaluate dimensionality and differential item functioning (DIF) analysis to evaluate parameter stability between genders and by age; we examined residual correlations to evaluate local dependence (LD) among items and estimated the parameters of item response theory (IRT) models.
Results:
Of 3,048 participants, 48 % were males, 60 % were white, and 23 % had at least one chronic condition. CFA results suggest two moderately correlated factors. Two items were removed due to high LD, and three due to gender-based DIF. Two item banks were calibrated separately using IRT: Tired and (Lack of) Energy, which consisted of 23 and 11 items, respectively; 10- and 8-item short-forms were created.
Conclusion:
The PROMIS assessment of self-reported fatigue in pediatrics includes two item banks: Tired and (Lack of) Energy. Both demonstrated satisfactory psychometric properties and can be used for research settings.
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