Thus the test had limited specificity (43%) and a high overreferral rate. However, more than half the children with normal development also received abnormal, questionable, or untestable Denver-II scores. The Denver-II identified correctly 83% and thus had high rates of sensitivity. Developmental problems including language impairments, learning disabilities, mild mental retardation, and/or functional developmental delay were found in 17% of the children. A second psychological examiner, blind to the outcome of the diagnostic battery, administered the Denver-II. To determine the presence of developmental problems, children were administered individual measures of intelligence, speech-language, achievement, and adaptive behavior. Because it was published without evidence of its accuracy, the present study was undertaken with 104 children between 3 and 72 months of age attending one of five day-care centers. One of the oldest and best known developmental screening tests was recently restandardized and revised as the Denver-II.
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