---
title: LegendEHR Predictive Decision Support Intervention (DSI)
description: "# LegendEHR Predictive Decision Support Intervention ## **Transparency Disclosure Table** ### **Use Case: Psoriasis Flare Prediction** *(Prepared for ONC §170.315(b)(11) Certification)* Predictive DSI Transparency Attributes ### **Purpose / Intended Use** Predicts likelihood of a psoriasis flare within 30 days to…"
url: "https://legendehr.com/docs/legendehr-predictive-decision-support-intervention-dsi/"
updated: "2025-10-09"
category: LegendEHR
---

# LegendEHR Predictive Decision Support Intervention (DSI)

# LegendEHR Predictive Decision Support Intervention

## **Transparency Disclosure Table**

### **Use Case: Psoriasis Flare Prediction**

*(Prepared for ONC §170.315(b)(11) Certification)*

Predictive DSI Transparency Attributes

### **Purpose / Intended Use**

Predicts likelihood of a psoriasis flare within 30 days to support proactive treatment planning. Not a diagnostic tool; intended as a clinical aid.

### **Target Population**

Adult patients (18+) with a confirmed psoriasis diagnosis.

### **Input Data Sources**

EHR data: demographics, diagnosis codes, medication adherence, lab values (e.g., CRP), lifestyle factors (smoking, BMI), prior flare history.

**Training Data**
 Historical de‑identified patient records from dermatology clinics (2023–2025), ~500 patient encounters

### **Model Type / Methodology**

Gradient boosting machine learning model trained on structured EHR data.

### **Validation / Performance Metrics**

AUROC: 0.82; Sensitivity: 78%; Specificity: 75%. Validated on independent dataset of 10,000 patients.

### **Fairness / Bias Assessment**

Tested across subgroups (age, gender, Fitzpatrick skin types I–VI). Performance consistent across groups; slight sensitivity drop in skin type V–VI addressed by rebalancing training data.

### **Limitations**

Predictions may be less accurate for patients with rare comorbidities or incomplete medication adherence data. Not validated in pediatric populations.

### **Update / Maintenance Frequency**

Model retrained annually with most recent 2 years of data; knowledge base reviewed quarterly.

### **Human Oversight**

Final treatment decisions remain with the dermatologist. Alerts can be overridden or dismissed.

### **Transparency of Logic**

Risk score generated from weighted factors (recent flare history, biologic adherence, inflammatory markers). Clinician can view top contributing factors per prediction.

### **Risk Management**

Alerts flagged as “advisory” only; no automatic treatment changes. Providers must confirm before acting.

### **Governance / Accountability**

Maintained by LegendEHR Clinical AI Team; oversight by Medical Advisory Board.

### **Contact for Feedback / Issues**

Support portal: support@legendehr.com — clinicians can report anomalies, request clarifications, or suggest improvements.