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. 2023 Jun 17;45(4):999–1006. doi: 10.1007/s11096-023-01612-x

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© The Author(s) 2023, corrected publication 2024

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Fig. 2 — Confirmatory factor analysis of the Medication Adherence Universal Questionnaire (MAUQ®) using a second order 4-factor model (A) and using a bifactor model with the four factors uncorrelated (B)