Comparative profile for COVID-19 cases from China and North America: Clinical symptoms, comorbidities and disease biomarkers

Figure 1 Flowchart of study selection and systematic literature review process. The flow diagram describes the systematic review of literature evaluating the prevalence of comparative profile for coronavirus disease 2019 (COVID-19) cases from China and North America from studies selected from Aggregated Dataset of Clinical Outcomes for COVID-19 Patients[7]. Quantitative analysis is developed from 124 studies from China (n = 105) and North America (n = 19).

Figure 2 Comparative profile for the correlation between comorbidities (proportion) and age (years) in coronavirus disease 2019 cases from China and North America. A: China; B: North America. Lines represent linear regression between the proportion of comorbidity and age. Colors correspond to the comorbidity in the insert table with the related Pearson correlation coefficient (r). Each data marker represents one entry. All r values are significant at P < 0.05 for the corresponding number of entries shown. Number of entries is per the source database[7].