Systemic immune-inflammation index combined with pediatric appendicitis score in assessing the severity and prognosis for paediatric appendicitis

Table 2 Systemic immune-inflammation index comparison between acute appendicitis and chronic appendicitis groups

Parameter	Acute appendicitis group (n = 51)	Chronic appendicitis group (n = 53)	t value	P value
Neutrophil count (× 109/L)	7.82 ± 2.03	6.76 ± 1.87	2.754	0.007
Lymphocyte count (× 109/L)	2.54 ± 0.87	3.11 ± 0.92	3.233	0.002
Platelet count (× 109/L)	290.62 ± 45.91	271.34 ± 47.68	2.101	0.038
SII	660.41 ± 80.34	605.27 ± 78.25	3.544	< 0.001

SII: Systemic immune-inflammation index.