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Kazuki Hirao

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Open access Sep 2026

Structural validity and measurement invariance of the Japanese version of the Kessler Psychological Distress Scale (K6): an item response theory analysis

Abstract Background The Kessler Psychological Distress Scale (K6) is in widespread use to screen for psychological distress, but evidence to support the quality of the Japanese version (JK6) remains limited, in particular with respect to item response theory (IRT)-based item parameters and the test information function...

Chihaya Machida, Hiroyuki Uchida, Takumi Igusa et al. · 0 citations

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