Although COVID-19 affects men and women differently, the large majority of current clinical studies of SARS-CoV-2 and COVID-19 makes no mention of sex/gender. Indeed, only a fraction, 4 percent, explicitly plan to address sex and gender in their analysis, concludes a new analysis of nearly 4,500 studies. 21 percent only take this variable into account when selecting participants while 5.4 % go as far as planning to have sex-matched or representative subgroups and samples.
