Table 1.

Alvarado score, Pediatric appendicitis score and Lintula score

	Alvarado score [4]		Pediatric appendicitis score [5]		Lintula score [6]
	Migration to right lower quadrant	1	Migration of pain	1	Male	2
	Anorexia - acetone	1	Anorexia	1	Intensity of pain = severe	2
	Nausea - vomiting	1	Nausea/emesis	1	Relocation of pain	4
	Tenderness in the right lower quadrant	2	Tenderness over the right iliac fossa	2	Vomiting	2
	Rebound pain	1	Cough/percussion/hopping tenderness in the right lower quadrant	2	Pain in right lower quadrant	4
	Elevation of temperature > 37.3	1	Pyrexia	1	Fever >37.5	3
	Leukocytosis >10.0 × 10 9 /L	2	Leukocytosis > 10.0 × 10 9 /L	1	Guarding	4
	Shift to the left >75 %	1	Polymorphonuclear neutrophilia	1	Absent, tinkling or high-pitched bowel sounds	4
					Rebound tenderness	7
Total	10		10		32
Score interpretation	Non-appendicitis	<5	Non-appendicitis	≤5	Low probability of appendicitis – amenable to discharge	≤15
	Compatible with appendicitis – may be observed	5–6	High probability of appendicitis	≥6	Intermediate probability of appendicitis – further observation	16–20
	Probable appendicitis – requires surgery	7–8			High probability of appendicitis – emergency surgery	≥21
	Very probable appendicitis – requires surgery	9–10

Components based on laboratory investigation have been underlined