Division of Infectious Diseases and Immunology, Department of Medicine
Diagnosis | Hemic and Immune Systems | Microbiology | Statistical Models | Virus Diseases
BACKGROUND: Early recognition of dengue, particularly patients at risk for plasma leakage, is important to clinical management. The objective of this study was to build predictive models for dengue, dengue hemorrhagic fever (DHF), and dengue shock syndrome (DSS) using structural equation modelling (SEM), a statistical method that evaluates mechanistic pathways.
METHODS/FINDINGS: We performed SEM using data from 257 Thai children enrolled within 72 h of febrile illness onset, 156 with dengue and 101 with non-dengue febrile illnesses. Models for dengue, DHF, and DSS were developed based on data obtained three and one day(s) prior to fever resolution (fever days -3 and -1, respectively). Models were validated using data from 897 subjects who were not used for model development. Predictors for dengue and DSS included age, tourniquet test, aspartate aminotransferase, and white blood cell, % lymphocytes, and platelet counts. Predictors for DHF included age, aspartate aminotransferase, hematocrit, tourniquet test, and white blood cell and platelet counts. The models showed good predictive performances in the validation set, with area under the receiver operating characteristic curves (AUC) at fever day -3 of 0.84, 0.67, and 0.70 for prediction of dengue, DHF, and DSS, respectively. Predictive performance was comparable using data based on the timing relative to enrollment or illness onset, and improved closer to the critical phase (AUC 0.73 to 0.94, 0.61 to 0.93, and 0.70 to 0.96 for dengue, DHF, and DSS, respectively).
CONCLUSIONS: Predictive models developed using SEM have potential use in guiding clinical management of suspected dengue prior to the critical phase of illness.
Fevers, Dengue fever, Forecasting, Hematocrit, Platelets, Clinical laboratories, Lymphocytes, Blood plasma
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DOI of Published Version
PLoS Negl Trop Dis. 2018 Oct 1;12(10):e0006799. doi: 10.1371/journal.pntd.0006799. eCollection 2018 Oct. Link to article on publisher's site
PLoS neglected tropical diseases
Park S, Srikiatkhachorn A, Kalayanarooj S, Macareo L, Green S, Friedman JF, Rothman AL. (2018). Use of structural equation models to predict dengue illness phenotype. Open Access Publications by UMass Chan Authors. https://doi.org/10.1371/journal.pntd.0006799. Retrieved from https://escholarship.umassmed.edu/oapubs/3627
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This work is licensed under a Creative Commons 1.0 Public Domain Dedication.