Fig. 4

Tree diagrams: A tree diagrams representing the relative proportion of outcomes reported in all studies. B Tree diagrams representing the relative proportion of studies by study group. Legend. * Treemap representing hierarchical outcome data using nested rectangles. Large rectangle represent core outcome areas, smaller rectangular tiles within each core outcome area represent outcome domains. Each rectangle has an area proportional to the frequency reported within included studies. All studies n = 103, Bedded acute frailty unit n = 32, Hospital at Home n = 38, ED in reach models n = 28, Care home n = 5