Table 2.

Biochemical indexes for predicting SAP in the patients with APIP.

Variables	AUC	95%CI	P Value	Cut-off	Sensitivity	Specificity	+LR	-LR
WCC(×10^9/L)	0.713	0.607 to 0.818	0.001	12.99	0.765	0.576	1.80	0.41
Neu(×10^9/L)	0.707	0.602 to 0.813	0.001	11.64	0.794	0.561	1.81	0.37
Glucose(mmol/L)	0.666	0.543 to 0.788	0.007	6.62	0.706	0.636	1.94	0.46
Albumin(g/L)	0.659	0.547 to 0.771	0.009	35.65	0.515	0.824	2.93	0.59
RDW(%)	0.656	0.547 to 0.764	0.011	14.35	0.882	0.439	1.57	0.27
NLR	0.659	0.550 to 0.769	0.009	12.79	0.824	0.470	1.55	0.37
LMR	0.715	0.605 to 0.824	<0.001	1.51	0.727	0.735	2.74	0.37
PNI	0.657	0.543 to 0.771	0.010	38.60	0.652	0.735	2.46	0.47
BUN(mmol/L)	0.659	0.538 to 0.779	0.011	4.10	0.455	0.877	3.70	0.62
Scr(umol/L)	0.688	0.567 to 0.809	0.002	48.70	0.758	0.600	1.90	0.40
ALT(IU/L)	0.630	0.517 to 0.744	0.036	25.00	0.818	0.415	1.40	0.44
ALT/AST	0.698	0.576 to 0.744	0.001	0.61	0.636	0.800	3.18	0.46
LDH(IU/L)	0.777	0.676 to 0.877	<0.001	263.00	0.594	0.879	4.91	0.46
Calcium(mmol/L)	0.668	0.549 to 0.787	0.009	2.075	64.5	65.6	1.38	0.28
TG(mmol/L)	0.661	0.543 to 0.779	0.012	5.16	0.781	0.552	1.74	0.40
TC(mmol/L)	0.649	0.525 to 0.772	0.020	7.03	0.750	0.569	1.74	0.44

−LR, negative likelihood ratio; +LR, positive likelihood ratio; AUC, area under the receiver operating characteristic curve; PNI, prognostic nutritional index, were calculated as albumin (g/L) plus 5 × total lymphocyte count (10^9/L).