Differential item functioning of the SF-12 in a population-based regional joint replacement registry.
Iraj YadegariEric BohmOlawale F AyilaraLixia ZhangRichard SawatzkyTolulope T SajobiLisa M LixPublished in: Health and quality of life outcomes (2019)
Demographic and health status characteristics influenced SF-12 PH and MH item responses in joint replacement populations, although the size of the effects were not large for PH. We recommend testing and adjusting for DIF effects to ensure comparability of HRQoL measures in joint replacement populations.
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