| Autor: |
Ming-Yen Ng, Eric Yuk Fai Wan, Ho Yuen Frank Wong, Siu Ting Leung, Jonan Chun Yin Lee, Thomas Wing-Yan Chin, Christine Shing Yen Lo, Macy Mei-Sze Lui, Edward Hung Tat Chan, Ambrose Ho-Tung Fong, Sau Yung Fung, On Hang Ching, Keith Wan-Hang Chiu, Tom Wai Hin Chung, Varut Vardhanbhuti, Hiu Yin Sonia Lam, Kelvin Kai Wang To, Jeffrey Long Fung Chiu, Tina Poy Wing Lam, Pek Lan Khong, Raymond Wai To Liu, Johnny Wai Man Chan, Alan Ka Lun Wu, Kwok-Cheung Lung, Ivan Fan Ngai Hung, Chak Sing Lau, Michael D. Kuo, Mary Sau-Man Ip |
| Jazyk: |
angličtina |
| Rok vydání: |
2020 |
| Předmět: |
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| Zdroj: |
International Journal of Infectious Diseases, Vol 101, Iss , Pp 74-82 (2020) |
| Druh dokumentu: |
article |
| ISSN: |
1201-9712 |
| DOI: |
10.1016/j.ijid.2020.09.022 |
| Popis: |
Objectives: To develop: (1) two validated risk prediction models for coronavirus disease-2019 (COVID-19) positivity using readily available parameters in a general hospital setting; (2) nomograms and probabilities to allow clinical utilisation. Methods: Patients with and without COVID-19 were included from 4 Hong Kong hospitals. The database was randomly split into 2:1: for model development database (n = 895) and validation database (n = 435). Multivariable logistic regression was utilised for model creation and validated with the Hosmer–Lemeshow (H–L) test and calibration plot. Nomograms and probabilities set at 0.1, 0.2, 0.4 and 0.6 were calculated to determine sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV). Results: A total of 1330 patients (mean age 58.2 ± 24.5 years; 50.7% males; 296 COVID-19 positive) were recruited. The first prediction model developed had age, total white blood cell count, chest x-ray appearances and contact history as significant predictors (AUC = 0.911 [CI = 0.880−0.941]). The second model developed has the same variables except contact history (AUC = 0.880 [CI = 0.844−0.916]). Both were externally validated on the H–L test (p = 0.781 and 0.155, respectively) and calibration plot. Models were converted to nomograms. Lower probabilities give higher sensitivity and NPV; higher probabilities give higher specificity and PPV. Conclusion: Two simple-to-use validated nomograms were developed with excellent AUCs based on readily available parameters and can be considered for clinical utilisation. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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