Early urea-to-creatinine ratio to predict rapid muscle loss in critically ill patients with sepsis: a single-center retrospective observational study

Table 3 The accuracy of UCR to predict rapid muscle loss in CT re-examination within one week group

	AUROC	Threshold	Sensitivity, %	Specifcity, %	Positive predictive value, %	Negative predictive value, %
UCR_D1	0.46 (0.37–0.54)	> 48.1	0.88 (0.76–0.97)	0.17 (0.12–0.37)	0.39 (0.31–0.69)	0.68 (0.52–0.75)
UCR_D3	0.57 (0.49–0.66)	> 70.7	0.84 (0.49–0.91)	0.37 (0.29–0.73)	0.45(0.36–0.54)	0.78 (0.69–0.83)
ΔUCR	0.76 (0.68–0.83)	> 19.4	0.60 (0.49–0.83)	0.84 (0.61–0.95)	0.70 (0.67–0.93)	0.77 (0.68–0.85)

AUROC area under the receiver operating characteristic, UCR urea-to-creatinine ratio, UCR_D1 urea-to-creatinine ratio on day1, UCR_D3 urea-to-creatinine ratio on day3, ΔUCR difference in UCR between day 3 and day 1

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