Discriminant ability of the Infant Neurological International Battery (INFANIB) as a screening tool for the neurological follow-up of high-risk infants in Colombia.

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The aim of this study was to assess the discriminative ability of the Infant Neurological International Battery (INFANIB), applied at 3, 6 and 9 months of corrected age (CA), on neurological outcomes at 1 year of CA. An observational analytic study was conducted on a cohort of 5857 infants, followed up to 1 year of CA in a Kangaroo Mother Care programme from 1993 to 2010 in Bogotá, Colombia. Infants were included if they had two complete INFANIB results at 3 or 6 or 9 months of CA and at 12 months of CA, including the Griffiths Scale. The outcome was defined as the presence of a neurological abnormality, as evidenced by the results of both the INFANIB and Griffiths Scale. The sensitivity of the INFANIB at 3 months was 62.2%, and specificity was 76.1%, with a receiver operating characteristic (ROC) area of 0.69. At 6 months, the results were 77.5% for sensitivity and 74.4% for specificity (ROC 0.76), and at 9 months, they were 77.2% for sensitivity and 91.1% for specificity (ROC 0.84). The INFANIB was an appropriate neurological screening test with regard to determining which Colombian infants would benefit from a timely intervention for neuromotor disorders.