Performance of a Tic Screening Tool (MOVeIT) in Comparison to Expert Clinician Assessment in a Developmental-Behavioral Pediatrics Clinic Sample

ABSTRACTYouth with intellectual and developmental disabilities typically have higher rates of tics and stereotypies compared to children with otherwise typical development. Differentiating between these two pediatric movement disorders can be challenging due to overlapping clinical features, but is relevant due to distinct treatment modalities. The current study evaluated sensitivity and specificity of a tic screening measure, the Motor or Vocal Inventory of Tics (MOVeIT) in a pediatric sample enriched for stereotypy and tics. Children (n = 199, age 2–15 years old) receiving care in a developmental-behavioral pediatrics clinic underwent a gold-standard diagnostic assessment by a tic expert; these evaluations were compared to the MOVeIT. The MOVeIT demonstrated good sensitivity (89.8%) and relatively lower specificity (57.1%) compared to tic expert for detecting tics in the overall sample. Specificity of the MOVeIT to identify tics improved to 75% when excluding children with co-occurring stereotypy. For children with tics and co-occurring stereotypy, sensitivity remained high (91.9%) but specificity was low (39.1%). The area under the curve (AUC) value to detect tics on the MOVeIT compared to the tic expert gold standard was significantly higher for children without stereotypy (AUC = 85.7%) than those with stereotypy (AUC = 64.3%, p < .01). Overall, the ability to detect tics was better in those without co-occurring stereotypy symptoms. Further work is needed to establish the utility of the MOVeIT in populations where there is a high likelihood of co-occurring tics and stereotypy and in general population settings. Accurate distinction between tics and stereotypy will guide choices for intervention and anticipatory guidance for families. AcknowledgmentsWe thank the children and their parents for participation in this study. We gratefully acknowledge the contributions of the clinical providers in the Developmental and Behavioral Pediatrics clinic who engaged with the study: Lynn Cole, DNP; Jenniffer Herrera, MD; Angela Liberatore, NP; Lorna Patanella, NP; Jessica Reiffer, MD; Melissa Ryan, NP; Johanna Stump-Siembor, NP.Disclosure statementNo potential conflict of interest was reported by the author(s).Supplementary materialSupplemental data for this article can be accessed online at https://doi.org/10.1080/23794925.2023.2272948Additional informationFundingThis study was supported by the Association of University Centers on Disabilities (AUCD) cooperative agreement which was funded by the Centers for Disease Control and Prevention [Grant award U38OT000140]. Dr. Mink received salary support from IDDRC [grant P50HD103536] for preparation of the manuscript.