Development and validation of the paediatric Carbohydrate Perception Questionnaire (pCPQ), an instrument for the assessment of carbohydrate-induced gastrointestinal symptoms in the paediatric population.

Test‐retest reliability When n = 116 patients were given the pCPQ twice, that is, before and 30 minutes after drinking the lactose solution, their paired scores for the five items did not change significantly ( P > .05 for all items), while the correlation of items was highly significant ( P < .001 for all items) (Table 3 ).

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