Fig 1.
Study selection process.
Table 1.
Studies included in the systematic review.
Table 2.
Risk of bias assessment according the Newcastle Ottawa Score.
Fig 2.
Crude mortality risk according to the gender of COVID-19 patients.
Table 3.
Certainty in overall mortality effect estimates using Grading of Recommendations Assessment, Development and Evaluation (GRADE) methods.
Fig 3.
Risk of severe presentation of the COVID-19 according to gender.
Fig 4.
Risk of ICU admission in COVID-19 patients according to gender.