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Table 5 Content validity of the pre-final version of the DTCQ-8 for other drugs

From: Cross-cultural adaptation of the drug-taking confidence questionnaire drug version for use in Brazil

Item of DTCQ-8 Clarity of language Practical relevance Theoretical relevance
1 1.000 0.889 0.889
2 0.778 0.889 0.889
3 1.000 0.889 0.889
4 1.000 1.000 1.000
5 1.000 1.000 1.000
6 1.000 1.000 1.000
7 1.000 1.000 1.000
8 1.000 1.000 1.000
Average of the items 0.972 0.958 0.958