Fig. 2
From: Feedback function for capillary refilling time measurement device
a, b Pressing strength and time in the CRT measurement using the developed device without and with feedback function. Panel a Pressing strength. Panel b Pressing time. A significant difference was observed in the pressing strength and time between the CRT measurements using the portable CRT device with and without a feedback function (Mann–Whitney U test—strength: P < 0.001; time: P < 0.01). The feedback function significantly reduced the intra-examiner variance in the pressing strength and time (F test—strength: P < 0.001; time: P < 0.001). The median and minimum and maximum interquartile ranges are shown