Today I came across this study paper:
COVID-19 and smoking: A systematic review of the evidence
http://www.tobaccoin...119324,0,2.html
Excerpts from results of five different studies:
"Among the 191 patients, there were 54 deaths, while 137 survived. Among those that died, 9% were current smokers compared to 4% among those that survived, . . ."
"Similarly, Zhang et al.10 presented clinical characteristics of 140 patients with COVID-19. The results showed that among severe patients (n=58), 3.4% were current smokers and 6.9% were former smokers, in contrast to non-severe patients (n=82) among which 0% were current smokers and 3.7% were former smokers, . . ."
"In this study, none of those who needed to be admitted to an ICU (n=13) was a current smoker."
"Among the patients with severe symptoms, 16.9% were current smokers and 5.2% were former smokers, in contrast to patients with non-severe symptoms where 11.8% were current smokers and 1.3% were former smokers. Additionally, in the group of patients that either needed mechanical ventilation, admission to an ICU or died, 25.5% were current smokers and 7.6% were former smokers."
". . . among their population of 78 patients with COVID-19 that the adverse outcome group had a significantly higher proportion of patients with a history of smoking (27.3%) than the group that showed improvement or stabilization (3.0%), . . ."
Interesting, isn't it? Hmmm...