[1] Wu J, Wu XJ, Zeng WB, Guo DJ, Fang Z, Chen LL, et al. Chest CT findings in patients with coronavirus disease 2019 and its relationship with clinical features. Invest Radiol 2020;55(5):257 − 61. http://dx.doi.org/10.1097/RLI.0000000000000670.
[2] Guan WJ, Ni ZY, Hu Y, Liang WH, Ou CQ, He JX, et al. Clinical characteristics of coronavirus disease 2019 in China. N Engl J Med 2020. http://dx.doi.org/10.1056/NEJMoa2002032.
[3] Li Q, Guan XH, Wu P, Wang XY, Zhou L, Tong YQ, et al. Early transmission dynamics in Wuhan, China, of novel coronavirus-infected pneumonia. N Engl J Med 2020;382(13):1199 − 207. http://dx.doi.org/10.1056/NEJMoa2001316.
[4] Das S, Rahman RM. Application of ordinal logistic regression analysis in determining risk factors of child malnutrition in Bangladesh. Nutr J 2011;10:124. http://dx.doi.org/10.1186/1475-2891-10-124.
[5] Bender R, Grouven U. Ordinal logistic regression in medical research. J R Coll Physicians Lond 1997;31(5):546-51. https://www.ncbi.nlm.nih.gov/pubmed/9429194.
[6] The Novel Coronavirus Pneumonia Emergency Response Epidemiology Team. The epidemiological characteristics of an outbreak of 2019 novel coronavirus diseases (COVID-19) — China, 2020. China CDC Weekly 2020;2(8):113-22. http://weekly.chinacdc.cn/en/article/id/e53946e2-c6c4-41e9-9a9b-fea8db1a8f51.
[7] Ma CM, Liu Q, Li ML, Ji MJ, Zhang JD, Zhang BH, et al. The effects of type 2 diabetes and postoperative pneumonia on the mortality in inpatients with surgery. Diabetes Metab Syndr Obes 2019;12:2507 − 13. http://dx.doi.org/10.2147/DMSO.S232039.
[8] Jernigan DB. Update: public health response to the coronavirus disease 2019 outbreak-United States, February 24. MMWR Morb Mortal Wkly Rep 2020;69(8):216 − 9. http://dx.doi.org/10.15585/mmwr.mm6908e1.
[9] Zou QD, Zheng SF, Wang XC, Liu SJ, Bao JQ, Yu F, et al. Influenza a-associated severe pneumonia in hospitalized patients: risk factors and NAI treatments. Int J Infect Dis 2020;92:208 − 13. http://dx.doi.org/10.1016/j.ijid.2020.01.017.
[10] Okaishi K, Morimoto S, Fukuo K, Niinobu T, Hata S, Onishi T, et al. Reduction of risk of pneumonia associated with use of angiotensin I converting enzyme inhibitors in elderly inpatients. Am J Hypertens 1999;12(8):778 − 83. http://dx.doi.org/10.1016/s0895-7061(99)00035-7.