Comparisons Between US Norm-based Two-component and Japanese Norm-based Three-component SF-36 Summary Scores in Systemic Lupus Erythematosus Patients.

Although the agreement between the US norm-based two-component and Japanese norm-based three-component models of the SF-36 was insufficient, their scores demonstrated similar associations with other variables. Application of the US original version could be acceptable in certain studies depending on the research question.