. 2023 Oct 1;15(10):e46318. doi: 10.7759/cureus.46318

Table 5. 30-day mortality with stepwise logistic regression analysis.

'a' represents a cascading process to identify the most significant index. Variables entered in step 1 include: Preop PIV, PAN1st, PAN3rd, Preop SII, SII1st, SII3rd, Preop NLR, NLR1st, NLR3rd, Preop MLR, MLR1st, MLR3rd, and Delay to surgery. The last step, denoted as 'a', reveals the most significant index.

PIV^Preop: Preoperative pan immune-inflammation value; PIV^1st: Pan immune-inflammation value postoperative 1st day; PIV^3rd: Pan immune-inflammation value postoperative 3rd day; SII^Preop: Preoperative systemic immune-inflammation index; SII^1st: Systemic immune-inflammation index postoperative 1st day; SII^3rd: Systemic immune-inflammation index postoperative 3rd day; NLR^Preop: Neutrophil-lymphocyte ratio preoperative; NLR^1st: Neutrophil-lymphocyte ratio postoperative 1st day; NLR^3rd: Neutrophil-lymphocyte ratio postoperative 3rd day.

Variables in the Equation
		B	S.E. of B	Wald Statistics	P-value	Exp (p)	95% CI for Exp (p)
		B	S.E. of B	Wald Statistics	P-value	Exp (p)	Lower	Upper
First Step^a	PIV^preop	0.000	0.000	0.010	0.919	1.000	1.000	1.000
	PIV^1st	0.000	0.000	0.274	0.601	1.000	1.000	1.000
	PIV^3rd	0.000	0.000	0.960	0.327	1.000	1.000	1.001
	SII^preop	0.000	0.000	0.001	0.975	1.000	0.999	1.000
	SII^1st	0.000	0.000	0.012	0.911	1.000	1.000	1.000
	SII^3rd	0.000	.000	1.397	0.237	1.000	0.999	1.000
	Preop NLR	0.010	.053	.035	0.851	1.010	0.911	1.119
	NLR^1st	-0.007	0.047	0.021	0.884	0.993	0.906	1.089
	NLR^3rd	0.134	0.059	5.072	0.024	1.143	1.018	1.285
	Preop MLR	0.181	0.448	0.163	0.687	1.198	0.498	2.883
	MLR^1st	0.434	0.400	1.179	0.278	1.544	0.705	3.382
	MLR^3rd	-1.249	0.530	5.548	0.019	0.287	0.101	0.811
	Delay to surgery	0.002	0.003	0.730	0.393	1.002	0.997	1.008
	Constant	-1.308	0.327	16.018	0.000	0.270
Last Step^a	NLR^3rd	0.048	0.019	6.042	0.014	1.049	1.010	1.090
Last Step^a	Constant	-1.269	0.215	34.842	0.000	0.281