Work

The role of systemic immune-inflammation Index in predicting the diagnosis of severe pneumonia in children

Year: 2026

Type: article

Abstract: Objective: This study aimed to evaluate the role of Systemic Immune-Inflammation Index (SII) in predicting the diagnosis of severe pneumonia in children. Methods: A retrospective analysis included 595 pediatric community-acquired pneumonia (CAP) patients from the Affiliated Hospital of North Sichuan Medical College (January 2024-July 2025). Patients were randomly divided into development (70%) and validation (30%) sets. General clinical data and SII were collected. Statistical analysis included Mann-Whitney U, chi-square, multivariate logistic regression, and ROC analysis. A predictive nomogram was developed and evaluated for calibration, discrimination, and clinical utility. Results: SII was an independent risk factor for severe pneumonia. An SII ≥738.0 significantly increased severe pneumonia risk. A combined model including SII, infection status, length of hospital stay, and ICU admission showed higher predictive accuracy than SII alone. Conclusion: SII is a useful biomarker for predicting severe pneumonia in children. The nomogram integrating SII with clinical factors demonstrates good predictive performance.

Source: Frontiers in Pediatrics

DOI: 10.3389/fped.2026.1785969

Authors: Qirui Liu, Mengzhen Zhang, Hao Wei, Ailian Wang

Institution: Affiliated Hospital of North Sichuan Medical College

Language: English

Topic: Pneumonia and Respiratory Infections

Subfield: Epidemiology

Field: Medicine

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: gold

Estimated APC paid: $3,801