Fig. 6

Two-dimensional graphs of FI prevalence versus all-cause hospital mortality, long-term mortality, and the incidence of pneumonia overall and by different FI definitions. A All-cause hospital mortality versus FI prevalence. B All-cause long-term mortality versus FI prevalence. C The incidence of pneumonia versus FI prevalence. Effect sizes for FI by different definitions are represented by colored nodes, with bars representing the corresponding 95% CIs. FI prevalence by EF percentage < 20% or < 50% was not pooled due to their cohorts being completely covered by the same cohort with EF percentage < 80% in our study, if not, significant errors of selectivity were expected. FI feeding intolerance, EF enteral feeding, GRV gastric residual volume, GIS gastrointestinal symptoms, No. number, OR odds ratio, CI confidence interval