As an index of construct validity, Spearman's correlation was highly significant at the 0.001 level with both global indicators for the CPQ 11–14 total scale and all subscales (Table 2 ).
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Validity and reliability of the Child Perceptions Questionnaires applied in Brazilian children.
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While there was an apparent difference in CPQ 8–10 scores across the categories of DMFT, it did not quite reach statistical significance (see Additional file 1 ).