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Table 1 Example of adjustment for DIF by splitting item across countries

From: Quality of life in infants and children with atopic dermatitis: Addressing issues of differential item functioning across countries in multinational clinical trials

Country Item 1a Item 1b Item 1c Item 2
A *    *
B   *   *
C    * *
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Health and Quality of Life Outcomes

ISSN: 1477-7525

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