Measuring social health in the patient-reported outcomes measurement information system (PROMIS): item bank development and testing. Qual Life Res

Department of Medical Social Sciences, Feinberg School of Medicine, Northwestern University, 710 N. Lake Shore Dr., Room 725, Chicago, IL 60611, USA.
Quality of Life Research (Impact Factor: 2.49). 04/2010; 19(7):1035-44. DOI: 10.1007/s11136-010-9654-0
Source: PubMed


To develop a social health measurement framework, to test items in diverse populations and to develop item response theory (IRT) item banks.
A literature review guided framework development of Social Function and Social Relationships sub-domains. Items were revised based on patient feedback, and Social Function items were field-tested. Analyses included exploratory factor analysis (EFA), confirmatory factor analysis (CFA), two-parameter IRT modeling and evaluation of differential item functioning (DIF).
The analytic sample included 956 general population respondents who answered 56 Ability to Participate and 56 Satisfaction with Participation items. EFA and CFA identified three Ability to Participate sub-domains. However, because of positive and negative wording, and content redundancy, many items did not fit the IRT model, so item banks do not yet exist. EFA, CFA and IRT identified two preliminary Satisfaction item banks. One item exhibited trivial age DIF.
After extensive item preparation and review, EFA-, CFA- and IRT-guided item banks help provide increased measurement precision and flexibility. Two Satisfaction short forms are available for use in research and clinical practice. This initial validation study resulted in revised item pools that are currently undergoing testing in new clinical samples and populations.

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    • "The Patient Reported Outcome Measurement Information System (PROMIS) is a collective of measures containing a library of highly reliable, valid, flexible, and precise assessment tools for measuring patientreported health status. One of the PROMIS instruments , the Satisfaction with Social Roles and Activities scale, is a well-validated 8-item instrument to assess satisfaction with social roles and activities [3] [16]. "
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