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Receiver-operating characteristic curves showing the ability of the Children’s Index of Diet Quality (CIDQ) to assess (a) at least moderate and (b) good diet quality among 2–6-year-old children (n 374), South-West Finland, March 2009–March 2010. The chosen cut-offs are ≥10 points for at least moderate and ≥14 points for good diet quality, which maximize the sum of sensitivity and specificity (– – –, line of no discrimination)
