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Figure/Table legend :
Fig. 1. The flowchart of selecting studies for this analysis. Careful screening and stringent criteria were used.
Fig. 2. The forests plots of fever (A), dyspnea (B) and diarrhea (C). In all cases, these symptoms were found significantly enriched in patients with severe COVID-19 pneumonia.
Fig. 3. The funnel plot of fever, dyspnea and diarrhea. They are all largely symmetrical, suggesting no significant publication deviation exists.
Table 1 A summary of clinical presentations from COVID-19 pneumonia. This is a summary based on 14 eligible studies.
Table 2 The comparison of clinical features from severe vs. non-severe COVID-19 pneumonia. Here three high-quality studies with used for comparison and statistical analysis.
Table 3 Basic characteristics at time of hospital admission for COVID-19 patients in Wenzhou, China.