Abstract
To develop a screening tool (the screening Hand Assessment for Infants [s-HAI]) for infants aged from 3.5 months that can identify a high risk of developing unilateral cerebral palsy (CP) based on a selection of items from the HAI. Receiver operating characteristic curve analysis was performed on previously collected HAI assessments from 212 infants (104 females, 108 males) aged from 3.5 to 8.5 months, to select items suitable for screening. The area under the curve (AUC), sensitivity, specificity, and cut-off values were derived for the suggested item combination. The clinical outcome (unilateral CP yes or no) at 24 months or older served as the external criterion. About half of the infants developed unilateral CP. The AUC across the items ranged from 0.63 to 0.80, and from 0.85 to 0.87 for different item combinations. Sensitivity for the selected 6-item set was 91% for 8 points or less and 88% for 7 points or less on the contralesional score of each hand, while specificity was 60% and 73% respectively. The s-HAI, designed from six HAI items, has the potential to be used to screen infants at risk of unilateral CP from 3.5 months of age. It is easy to administer, time-efficient, and can be used in different settings. Its measurement properties and feasibility need to be tested in a new data set.
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