PMID- 34129653 OWN - NLM STAT- MEDLINE DCOM- 20210629 LR - 20231103 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 16 IP - 6 DP - 2021 TI - The selection of indicators from initial blood routine test results to improve the accuracy of early prediction of COVID-19 severity. PG - e0253329 LID - 10.1371/journal.pone.0253329 [doi] LID - e0253329 AB - The global pandemic of COVID-19 poses a huge threat to the health and lives of people all over the world, and brings unprecedented pressure to the medical system. We need to establish a practical method to improve the efficiency of treatment and optimize the allocation of medical resources. Due to the influx of a large number of patients into the hospital and the running of medical resources, blood routine test became the only possible check while COVID-19 patients first go to a fever clinic in a community hospital. This study aims to establish an efficient method to identify key indicators from initial blood routine test results for COVID-19 severity prediction. We determined that age is a key indicator for severity predicting of COVID-19, with an accuracy of 0.77 and an AUC of 0.92. In order to improve the accuracy of prediction, we proposed a Multi Criteria Decision Making (MCDM) algorithm, which combines the Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) and Naive Bayes (NB) classifier, to further select effective indicators from patients' initial blood test results. The MCDM algorithm selected 3 dominant feature subsets: Age, WBC, LYMC, NEUT with a selection rate of 44%, Age, NEUT, LYMC with a selection rate of 38%, and Age, WBC, LYMC with a selection rate of 9%. Using these feature subsets, the optimized prediction model could achieve an accuracy of 0.82 and an AUC of 0.93. These results indicated that Age, WBC, LYMC, NEUT were the key factors for COVID-19 severity prediction. Using age and the indicators selected by the MCDM algorithm from initial blood routine test results can effectively predict the severity of COVID-19. Our research could not only help medical workers identify patients with severe COVID-19 at an early stage, but also help doctors understand the pathogenesis of COVID-19 through key indicators. FAU - Luo, Jiaqing AU - Luo J AD - School of Computer Science and Engineering, University of Electronic Science and Technology of China, Chengdu, China. FAU - Zhou, Lingyun AU - Zhou L AUID- ORCID: 0000-0002-6756-6725 AD - Center of Infectious Diseases, West China Hospital of Sichuan University, Chengdu, China. FAU - Feng, Yunyu AU - Feng Y AD - State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, China. FAU - Li, Bo AU - Li B AD - Department of Otorhinolaryngology, Head & Neck Surgery, West China Hospital, Sichuan University, Chengdu, China. FAU - Guo, Shujin AU - Guo S AD - The Geriatric Respiratory Department, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210615 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (Biomarkers) SB - IM MH - Adult MH - Age of Onset MH - Aged MH - Biomarkers/blood MH - COVID-19/blood/*diagnosis MH - Diagnostic Tests, Routine/*methods MH - Female MH - Hematologic Tests/*methods MH - Humans MH - Machine Learning MH - Male MH - Middle Aged MH - Prospective Studies MH - Risk Assessment/methods MH - SARS-CoV-2/isolation & purification MH - *Severity of Illness Index MH - Triage/*methods PMC - PMC8208037 COIS- The authors have declared that no competing interests exist. EDAT- 2021/06/16 06:00 MHDA- 2021/06/30 06:00 PMCR- 2021/06/15 CRDT- 2021/06/15 17:23 PHST- 2021/02/03 00:00 [received] PHST- 2021/06/03 00:00 [accepted] PHST- 2021/06/15 17:23 [entrez] PHST- 2021/06/16 06:00 [pubmed] PHST- 2021/06/30 06:00 [medline] PHST- 2021/06/15 00:00 [pmc-release] AID - PONE-D-21-03740 [pii] AID - 10.1371/journal.pone.0253329 [doi] PST - epublish SO - PLoS One. 2021 Jun 15;16(6):e0253329. doi: 10.1371/journal.pone.0253329. eCollection 2021.