TABLE 4.
Sens | Spec | PPV | NPV | False positive | False negative | LR+ | Acc | |
---|---|---|---|---|---|---|---|---|
Rourke | ||||||||
One flag | 100 | 72 | 20 | 100 | 28 | 0 | 3.6 | 74 |
Two flags | 100 | 90 | 40 | 100 | 10 | 0 | 9.7 | 90 |
NDDS | ||||||||
One flag | 100 | 76 | 22 | 100 | 24 | 0 | 4.1 | 77 |
Two flags | 100 | 93 | 50 | 100 | 7 | 0 | 14.5 | 94 |
Data presented as %, except for the likelihood ratio of a positive test (LR+).
A score of ≤70 (two SDs below the mean) on the BSITD-III was assessed to determine whether the test characteristics differed when using a more impaired definition of delay.
A ‘No’ response, indicating that the child did not demonstrate the skill, was termed a ‘flag’. Acc Accuracy; NPV Negative predictive value; PPV Positive predictive value; Sens Sensitivity, Spec Specificity