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Sample of (N=64) parents and their children aged 2 years who were born very prematurely

Validation of a parent report measure of cognitive development in very preterm infants. Johnson S, Marlow N, Wolke D, Davidson L, Marston L, O'Hare A, Peacock J, Schulte J. Dev Med Child Neurol. 2004 Jun; 46(6): 389-97.
Validate a new screening tool for cognitive function in children.
Data dictionary:

Each row contains the following 4 variables for each person.

Name Interpretation Data type Permitted Values
mdi Mental Development Index Numeric
parent Parent questionnaire score Numeric
parca Parent score low Numeric
mdi2 MDI score low Numeric