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Screening for pediatric abusive head trauma: Are three variables enough?
Kent P Hymel1, Wouter Karst2, Mark Marinello3
1Department of Pediatrics, Penn State College of Medicine, Penn State Health Children's Hospital, 600 University Drive, Hershey, PA 17033, USA.
Insights
The 3-variable PediBIRN clinical decision rule (CDR) offers improved accuracy for screening abusive head trauma (AHT) in pediatric intensive care units (PICUs) compared to the 4-variable rule. Both rules effectively predict abuse evaluation outcomes.
Area of Science:
- Pediatric critical care medicine
- Child abuse and neglect research
- Clinical decision support systems
Background:
- The 4-variable PediBIRN clinical decision rule (CDR) demonstrates high sensitivity (96%) for detecting abusive head trauma (AHT) in pediatric intensive care units (PICUs).
- Preliminary findings suggested that simplifying the PediBIRN rule by removing a variable could enhance screening accuracy in emergency departments.
Purpose of the Study:
- To compare the abusive head trauma (AHT) screening performance of the original 4-variable PediBIRN CDR against a simplified 3-variable CDR within PICU settings.
Main Methods:
- A retrospective analysis was conducted on data from 973 head-injured children under 3 years old admitted to PICUs across 18 sites.
- Patients were categorized into abusive head trauma (AHT) and other head trauma cohorts based on defined criteria and physician diagnoses.
- Performance metrics including sensitivity, specificity, predictive values, and ROC AUC were evaluated for both the 4-variable and 3-variable CDRs.
Main Results:
- Both CDRs exhibited high sensitivity (≥93%) and negative predictive value (≥91%).
- The 3-variable CDR demonstrated significantly improved specificity (≥19% increase), positive predictive value (≥8% increase), and ROC AUC (≥5% increase) compared to the 4-variable CDR, despite a 3% reduction in sensitivity.
- Both versions showed a strong correlation between estimated abuse probability and the yield of abuse evaluations (Pearson's r = 0.95 and 0.91).
Conclusions:
- The simplified 3-variable PediBIRN CDR offers superior accuracy for screening abusive head trauma in PICU settings compared to the 4-variable version.
- Both CDRs serve as reliable predictors of outcomes from subsequent child abuse evaluations.
Background:
The PediBIRN 4-variable clinical decision rule (CDR) detects abusive head trauma (AHT) with 96% sensitivity in pediatric intensive care (PICU) settings. Preliminary analysis of its performance in Pediatric Emergency Department settings found that elimination of its fourth predictor variable enhanced screening accuracy.
Objective:
To compare the AHT screening performances of the "PediBIRN-4" CDR vs. the simplified 3-variable CDR in PICU settings.
Participants And Settings:
973 acutely head-injured children <3 years hospitalized for intensive care across 18 sites between February 2011 and March 2021.
Methods:
Retrospective, secondary analysis of the combined, prospective PediBIRN data sets. AHT definitional criteria and physicians' diagnoses were applied iteratively to sort patients into abusive vs. other head trauma cohorts. Outcome measures of CDR performance included sensitivity, specificity, predictive values, likelihood ratios, ROC AUC, and the correlation between each CDR's patient-specific estimates of AHT probability and the overall positive yield of patients' completed abuse evaluations.
Results:
Applied accurately and consistently, both CDR's would have performed with sensitivity ≥93% and negative predictive value ≥91%. Eliminating the PediBIRN-4's fourth predictor variable resulted in significantly higher specificity (↑'d ≥19%), positive predictive value (↑'d ≥8%), and ROC AUC (↑'d ≥5%), but a 3% reduction in sensitivity. Both CDRs provided patient-specific estimates of abuse probability very strongly correlated with the positive yield of patients' completed abuse evaluations (Pearson's r = 0.95 and 0.91, p = .13).
Conclusion:
The PediBIRN 3-variable CDR performed with greater AHT screening accuracy than the 4-variable CDR. Both are good predictors of the results of patients' subsequent completed abuse evaluations.
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