4.2. Strengths and Limitations
Currently there are only meta-analyses of the epidemiology of common
patients infected with COVID-19, and there is few meta- analysis to
explore the clinical features and outcomes of pregnant women with
COVID-19. It is helpful to formulate clinical treatment strategies for
pregnant women with COVID-19.
The disadvantage of this article is the small sample and the general
quality of included documents, which lowers the credibility of the
meta-analysis results. Besides all the included articles are
retrospectively case analysis without control group, it also biased the
results. Furthermore, the funnel plots showed that most indicators may
have publication bias. Most of the included cases are Chinese, and the
others are American. There are few reports describing the cases outside
the two regions. Further research on pregnant women with COVID-19
worldwide is needed.