Fig. 5From: Asthma and COPD as co-morbidities in patients hospitalised with Covid-19 disease: a global systematic review and meta-analysisForest plot for studies in COPD mortality risk analysis. A risk ratio of 1 indicates no increased mortality risk with COPD. 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