Statistical analysis
Continuous variables were expressed as mean ± standard deviation (SD)
and categorical variables were expressed as numbers (percentages). For
comparisons independent Student’s t-test and χ2-test were used for
continuous and categorical variables, respectively. Binomial logistic
regression was performed to assess association between disease severity
and study parameters. All statistical tests were two-sided and a p value
<.05 was considered statistically significant. The analyses
were performed using Statistical Package for the Social Sciences®
version 22.
Standard Protocol Approvals
The study was approved by Kartal Dr. Lütfi Kırdar Education and Research
Hospital Ethics Comittee (13 May, 2020 - 2020/514/177/35).