Prism version 8.0 for windows

The data were analyzed using GraphPad Prism 8.0 software (GraphPad Software, CA) by an independent Student’s t-test, one-way analysis of variance, and Bonferroni’s post hoc test. The values of IC50 were determined using Prism version 8.0 for Windows (GraphPad Software). A p-value < 0.05 was considered statistically significant.

We calculated the exact numbers and proportions for all variables in Wuhan and Chongqing, as well as the total for the two cities. Cronbach's alpha was used to assess the reliability of the anxiety scale. To compare the distribution of background, attitude, anxiety and obstetric decisions between the two cities, the Chi‐square test, Kruskal–Wallis test and Student's t test were used in accordance with the type of data.
All factors related to pregnant women's background and their attitude towards COVID‐19 were selected as independent variables. We used stepwise logistic regression models to estimate the effect of these factors on the anxiety status.
The Statistics Analysis Software version 9.4 (SAS Institute Inc., Cary, NC, USA) was used and a significance level set at P < 0.05 was applied. Figures presented were plotted with PRISM version 8.0 for windows (GraphPad Software Inc., San Diego, CA, USA).
The corresponding authors had full access to all of the data in the study and had the final responsibility to submit the article for publication.