![]() Negative predictive values and likelihood ratios of a negative test and a non-referral decision achieved recommended levels. Combining test results with information from the parent–technician conference to achieve a referral decision resulted in an uncorrected predictive value of 56%, which rose with correction for children referred but not evaluated to 72% (LR+ 10.33). The uncorrected positive predictive value for the Denver II alone (44%) was insufficient to meet the preset standard of 60%, but the LR+ of 4.16 indicated a significant contribution of test information to improving predictive value. There were 129/418 (31%) children with Suspect Denver II results, 115/418 who were referred, 81/115 (70%) who were evaluated by Early Intervention, and 64/81 (79%) who qualified for services. The technician, working at 20% time, screened 44% of eligible children.
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