Fig. 2

Box and Whisker diagrams showing the relationship between the MHLW bedriddenness ranks and (a) the BI, and (b) the KI. Spearman’s rank correlation coefficient between the MHLW bedriddenness ranks and the BI was −0.848, p < 0.001 (a), and between the bedriddenness ranks and the KI this was − 0.820, p < 0.001 (b)