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Journal of Patient-Reported Outcomes

Table 4 Largest standardized residual correlations

From: Hyperhidrosis quality of life index (HidroQoL): further validation by applying classical test theory and item response theory using data from a phase III clinical trial

Residual correlation

Items

0.26

Item 2 & Item 3

0.24

Item 15 & Item 16

0.23

Item 3 & Item 6

0.23

Item 2 & Item 6

0.23

Item 8 & Item 9

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