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. 2019 Jan 5;19:1. doi: 10.1186/s12903-018-0701-5

Table 4.

CPQ and its domains internal consistency reliability statistics a (N = 307)

Domain/total CPQ Number of items Cronbach’s alpha ICC (95% CI)
OS 6 0.645 0.568 (0.488–0.639)
FL 9 0.701 0.691 (0.637–0.741)
EWB 9 0.759 0.755 (0.712–0.794)
SWB 13 0.862 0.859 (0.835–0.882)
Total CPQ 37 0.875 0.860 (0.836–0.881)

ICC intraclass correlation coefficient, CI confidence interval. a p < 0.001 for all values