Abstract
PainChek Infant, a mobile application (app) based on automated facial evaluation and analysis for assessing procedural pain in infants, is a welcome addition to recently developed automated tools for coding infant facial expressions. In The Lancet Digital Health, Kreshnik Hoti and colleagues document the strong psychometric properties and performance of PainChek Infant compared with the widely used manual Neonatal Facial Coding System Revised (NFCS-R).1,2 Both assessments are based on identifying a small number of facial muscle actions (six in PainChek Infant, five in NFCS-R) present in each of four 10 s video segments of infants undergoing an inoculation procedure (baseline, preparation, during, and recovery).
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