Table 2. The prognostic evaluation of 7th-day NRBC's effect on mortality.

AUC: Area Under Curve.

	NRBC<0.01<br>(negative)		NRBC<0.02		NRBC<0.03
Sensitivity	86.11%	70.503% to<br>95.332%	75.00%	57.797% to<br>87.880%	61.11%	43.464% to<br>76.858%
Specificity	48.57%	31.383% to<br>66.011%	77.14%	59.864% to<br>89.579%	94.60%	81.805% to<br>99.339%
AUC	0.673	0.552 to 0.780	0.761	0.645 to 0.854	0.779	0.666 to 0.867
Positive Likelihood Ratio	1.674	1.183 to 2.371	3.281	1.735 to 6.205	11.306	2.864 to 44.621
Negative Likelihood Ratio	0.286	0.118 to 0.691	0.324	0.179 to 0.587	0.411	0.271 to 0.624
Positive Predictive Value	63.27%	54.883% to<br>70.916%	77.14%	64.088% to<br>86.455%	91.67%	73.594% to<br>97.749%
Negative Predictive Value	77.27%	58.464% to<br>89.146%	75.00%	62.358% to<br>84.455%	71.43%	62.237% to<br>79.133%
Accuracy	67.61%	55.453% to<br>78.237%	76.06%	64.455% to<br>85.390%	78.08%	66.862% to<br>86.922%