apercentile that identifies 10% of the cohort as high risk
bpercentile that maximizes sensitivity and specificity using Youden’s Index
Table 5 . Discriminatory ability of select WHO fetal growth chart percentiles in identifying kindergarten age developmental vulnerability [bottom 10% of one or more Early Development Index subscales) among 3,401 children with an ultrasound >28 weeks at the BC Women’s Hospital, Vancouver, Canada, 2000-2011.Absolute risks of bottom 10% of one or more EDI subscales and test performance associated with WHO percentiles.