Fig. 6From: Noninvasive respiratory support outside the intensive care unit for acute respiratory failure related to coronavirus-19 disease: a systematic review and meta-analysisSummary estimates of intra-hospital mortality observed in patients with limitations of care and of that reported in patients under ‘full treatment’ who were not intubated. a Summary estimate of intra-hospital mortality observed in patients with limitations of care. The vertical dotted line refers to the summary estimate of intra-hospital mortality observed in patients with limitations of care. Red squares indicate the individual study estimates of intra-hospital mortality observed in patients with limitations of care, whereas the black horizontal lines indicate the 95% confidence interval of single studies. The diamond refers to the summary estimate with 95% confidence interval. b Summary estimate of intra-hospital mortality observed in patients under ‘full treatment’ who were not intubated. The vertical dotted line refers to summary estimate of intra-hospital mortality observed in patients under ‘full treatment’ who were not intubated. Red squares indicate individual study estimates of intra-hospital mortality observed in patients under ‘full treatment’ who were not intubated, whereas the black horizontal lines indicate the 95% confidence interval of single studies. The diamond refers to the summary estimate with 95% confidence intervalBack to article page