Fig. 4From: Asthma and COPD as co-morbidities in patients hospitalised with Covid-19 disease: a global systematic review and meta-analysisForest plot for studies in Asthma mortality risk. A risk ratio of 1 indicates no increased mortality risk with asthma. Risk ratios greater than 1 represent increased risk. The black diamond gives the pooled risk ratio and the width of the 95% confidence intervalBack to article page