Table 4.

Results of structural equation modeling analysis.

Hypothesis			Standardized path coefficient	Standard error	P-value	Support
SII	→	CI-AKI	0.102	0	<0.001*	Yes
CRP	→	CI-AKI	0.07	0	<0.001*	Yes
NLR	→	CI-AKI	0.096	0.002	<0.001*	Yes
PLT	→	CI-AKI	−0.035	0	0.030*	Yes
SII	→	NLR	0.408	89.805	<0.001*	Yes
SII	→	PLT	0.371	1149.353	<0.001*	Yes
CRP	↔	NLR	0.242	1.828	<0.001*	Yes
CRP	↔	PLT	0.108	22.956	<0.001*	Yes
NLR	↔	PLT	0.133	5.342	<0.001*	Yes

SII indicates systemic immune-inflammation index; CI-AKI, contrast-induced acute kidney injury; CRP, C-reaction protein; NLR, neutrophil to lymphocyte ratio; PLT, peripheral platelet.

^*P <0.05.