• Shaoqing Chai, Yan Li, Xuemei Li, Jie Tan, Mohamed E A Abdelrahim, and Xiaoxiao Xu.
• Department of Pediatrics, Inner Mongolia People's Hospital, Hohhot City, Inner Mongolia, China.
• Int. J. Clin. Pract. 2021 Oct 1; 75 (10): e14640.

BackgroundClinical symptoms of adults and paediatric inpatients with COVID-19 disease are conflicting. This meta-analysis was conducted to assess the effect of age of COVID-19 inpatient on the severity of the disease.MethodsA systematic literature search up to January 2021 was performed and 5 studies included 910 inpatients with COVID-19 disease at the baseline of the study; 773 of them were adult inpatients, and 137 of them were paediatric inpatients. They reported a comparison between adults and children with COVID-19 in the level of symptomatic severity, clinical features, computed tomography (CT) results and laboratory results. Odds ratio (OR) with 95% confidence intervals (CIs) were calculated assessing the effect of age of COVID-19 inpatient on the severity of the disease using the dichotomous method with a random or fixed-effect model.ResultsAdults with COVID-19 disease had significantly lower number of mild cases (OR, 0.18; 95% CI, 0.04-0.77, P = .02); higher number severe cases (OR, 4.90; 95% CI, 2.03-11.83, P < .001); higher number of cases with fever (OR, 4.14; 95% CI, 2.31-7.43, P < .001); and higher number of cases with CT positive COVID-19 disease (OR, 2.04; 95% CI, 1.17-3.55, P = .001) compared with children. However, no significant difference was found between adults and children in number of cases with shortness of breath (OR, 1.44; 95% CI, 0.41-5.04, P = .57); dry cough (OR, 1.77; 95% CI, 0.64-4.93, P = .27); leukopenia (OR, 0.89; 95% CI, 0.47-1.66, P = .71); lymphopenia (OR, 0.96; 95% CI, 0.49-1.88, P = .91); high platelets (OR, 0.41; 95% CI, 0.17-1.02, P = .05); and high D-dimer (OR, 0.82; 95% CI, 0.43-1.56, P = .54).ConclusionsAdults with COVID-19 disease have a much higher level of symptomatic severity, fever and CT-positive COVID-19 disease than children. However, as shown in our results, the laboratory data were similar in both groups.© 2021 John Wiley & Sons Ltd.

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