TY - JOUR
T1 - Psychometric properties of the Patient-Reported Outcomes Measurement Information System (PROMIS®) pediatric item bank peer relationships in the Dutch general population
AU - Luijten, Michiel A.J.
AU - van Litsenburg, Raphaële R.L.
AU - Terwee, Caroline B.
AU - Grootenhuis, Martha A.
AU - Haverman, Lotte
N1 - Funding Information: Data collection in this study was supported by the National Health Care Institute. Funding Information: We would like to acknowledge Dr. Ben Schalet and Dr. Aaron Kaat, Northwestern University, for their help in further investigating the differences between the Dutch and U.S. IRT models using IRTPRO. Publisher Copyright: © 2021, The Author(s).
PY - 2021/2/19
Y1 - 2021/2/19
N2 - Purpose: This study aimed to validate the PROMIS Pediatric item bank v2.0 Peer Relationships and compare reliability of the full item bank to its short form, computerized adaptive test (CAT) and the social functioning (SF) subscale of the Pediatric Quality of Life Inventory (PedsQL™). Methods: Children aged 8–18 (n = 1327), representative of the Dutch population completed the Peer Relationships item bank. A graded response model (GRM) was fit to the data. Structural validity was assessed by checking item-fit statistics (S-X2, p < 0.001 = misfit). For construct validity, a moderately strong correlation (> 0.50) was expected between Peer Relationships and the PedsQL SF subscale. Cross-cultural DIF between U.S. and NL was assessed using logistic regression, where an item with McFadden’s pseudo R2 > 0.02 was considered to have DIF. Percentage of participants reliably measured was assessed using the standard error of measurement (SEM) < 0.32 as a criterion (reliability of 0.90). Relative efficiency ((1-SEM2)/nitems) was calculated to compare how well the instruments performed relative to the amount of items administered. Results: In total, 527 (response rate: 39.7%) children completed the PROMIS v2.0 Peer Relationships item bank (nitems = 15) and the PedsQL™ (nitems = 23). Structural validity of the Peer Relationships item bank was sufficient, but one item displayed misfit in the GRM model (S-X2 < 0.001); 5152R1r (“I played alone and kept to myself”). The item 733R1r (“I was a good friend”) was the only item that displayed cross-cultural DIF (R2 = 0.0253). The item bank correlated moderately high (r = 0.61) with the PedsQL SF subscale Reliable measurements were obtained at the population mean and > 2SD in the clinically relevant direction. CAT outperformed all other measures in efficiency. Mean T-score of the Dutch general population was 46.9(SD 9.5). Conclusion: The pediatric PROMIS Peer Relationships item bank was successfully validated for use within the Dutch population and reference data are now available.
AB - Purpose: This study aimed to validate the PROMIS Pediatric item bank v2.0 Peer Relationships and compare reliability of the full item bank to its short form, computerized adaptive test (CAT) and the social functioning (SF) subscale of the Pediatric Quality of Life Inventory (PedsQL™). Methods: Children aged 8–18 (n = 1327), representative of the Dutch population completed the Peer Relationships item bank. A graded response model (GRM) was fit to the data. Structural validity was assessed by checking item-fit statistics (S-X2, p < 0.001 = misfit). For construct validity, a moderately strong correlation (> 0.50) was expected between Peer Relationships and the PedsQL SF subscale. Cross-cultural DIF between U.S. and NL was assessed using logistic regression, where an item with McFadden’s pseudo R2 > 0.02 was considered to have DIF. Percentage of participants reliably measured was assessed using the standard error of measurement (SEM) < 0.32 as a criterion (reliability of 0.90). Relative efficiency ((1-SEM2)/nitems) was calculated to compare how well the instruments performed relative to the amount of items administered. Results: In total, 527 (response rate: 39.7%) children completed the PROMIS v2.0 Peer Relationships item bank (nitems = 15) and the PedsQL™ (nitems = 23). Structural validity of the Peer Relationships item bank was sufficient, but one item displayed misfit in the GRM model (S-X2 < 0.001); 5152R1r (“I played alone and kept to myself”). The item 733R1r (“I was a good friend”) was the only item that displayed cross-cultural DIF (R2 = 0.0253). The item bank correlated moderately high (r = 0.61) with the PedsQL SF subscale Reliable measurements were obtained at the population mean and > 2SD in the clinically relevant direction. CAT outperformed all other measures in efficiency. Mean T-score of the Dutch general population was 46.9(SD 9.5). Conclusion: The pediatric PROMIS Peer Relationships item bank was successfully validated for use within the Dutch population and reference data are now available.
KW - Computerized adaptive testing
KW - Health-related quality of life
KW - Psychometrics
KW - Reliability
KW - Social functioning
KW - Validity
UR - http://www.scopus.com/inward/record.url?scp=85101044911&partnerID=8YFLogxK
U2 - https://doi.org/10.1007/s11136-021-02781-w
DO - https://doi.org/10.1007/s11136-021-02781-w
M3 - Article
C2 - 33606180
SN - 0962-9343
VL - 30
SP - 2061
EP - 2070
JO - Quality of life research
JF - Quality of life research
ER -