AI models predict asthma risk in children with early eczema

Researchers say early-warning models could help target preventive care

Children who develop eczema very early in life often go on to face other allergic conditions, but clinicians have had limited tools for estimating which patients are most likely to progress to more serious respiratory disease. A new study suggests that machine learning may now offer a sharper way to sort that risk.

In research published online April 17 in the Journal of Allergy and Clinical Immunology, investigators from Kaiser Permanente Southern California developed and validated prediction models for children diagnosed with atopic dermatitis before age 3. Using electronic health record data from 10,688 children, the team built models to estimate individualized risk for developing moderate-to-severe persistent asthma and allergic rhinitis between ages 5 and 11.

The results point to a potentially useful clinical tool, especially for health systems looking to identify higher-risk children earlier and intervene before symptoms escalate. The researchers reported strong performance for asthma prediction and more moderate, but still meaningful, performance for allergic rhinitis.

Strong asthma prediction in a large real-world dataset

The asthma models posted area-under-the-curve scores of 0.893 for the comprehensive version and 0.892 for a simplified version, indicating strong discrimination in separating children who later developed disease from those who did not. At a 95% specificity threshold, the comprehensive model achieved 40.4% sensitivity and a positive predictive value of 39.3%, while the simplified model reached 36.2% sensitivity and 33.8% positive predictive value.

Those figures matter because they suggest the models were particularly good at limiting false positives while still capturing a meaningful share of children who would later go on to develop persistent asthma. In practice, such a balance can be important for pediatric care, where unnecessary escalation has costs, but missed risk can lead to delayed treatment and avoidable complications.

The rhinitis models were less precise than the asthma models, but still delivered moderate predictive performance. The comprehensive rhinitis model achieved an AUC of 0.793, while the simplified model scored 0.773. At 90% specificity, the comprehensive model reached 35.5% sensitivity with a 72.7% positive predictive value, while the simplified model produced 34.0% sensitivity and 69.2% positive predictive value.

The authors also reported acceptable calibration, with especially strong agreement in the highest-risk groups. That point is significant because even a model with strong discrimination can be less useful if its risk estimates are poorly aligned with what actually happens in the clinic.

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What the study can and cannot tell clinicians yet

The findings are promising, but they do not by themselves prove that using the models will improve outcomes. The study shows prediction performance, not the results of a trial in which clinicians changed care based on model output. Real-world benefit would depend on how these scores are presented to doctors, what interventions follow, and whether those interventions reduce later disease burden.

The reported sensitivities also show the limits of the current approach. Even with high specificity, the models would still miss a substantial share of children who later develop persistent asthma or rhinitis. That makes them more useful for risk enrichment than for ruling out disease entirely.

Still, the scale of the dataset and the strong asthma results make the study notable. Pediatric risk prediction has often been constrained by small cohorts, narrow research settings, or models that are difficult to translate into practice. Here, the work was built on a large electronic health record population and focused on a clinically familiar group: children with eczema diagnosed before age 3.

If follow-on validation and implementation studies confirm the results, the research could help move pediatric allergy care toward more proactive management. Rather than waiting for respiratory symptoms to emerge, clinicians may be able to identify a subset of children earlier and decide who needs closer surveillance or preventive strategies.