Table 2.

Clinical scores and classification of the patients into three groups according to probability values

	Appendicitis group	Non-appendicitis group	P-value
Sex, male	22 (36.1)	41 (32.0)	0.582
Age (yr)	31.0 (22.0–43.0)	35.0 (24.5–43.5)	0.428
Clinical score
Alvarado	6 (4–7)	4 (3–6)	< 0.001
Eskelinen	36.04 (34.41–40.29)	32.29 (30.16–36.04)	< 0.001
AIR	5 (3–5)	3 (2–5)	< 0.001
RIPASA	5.5 (5.0–7.0)	5.0 (4.0–6.0)	0.001
AAS	11 (9–14)	8 (5–11)	< 0.001
Patient classification according to probabilities
Alvarado			0.006
Low (≤ 2)	2	19
Intermediate (2 < score ≤ 7)	50	103
High (> 7)	9	6
Eskelinen			0.002
Low (≤ 28.03)	0	3
Intermediate (28.03 < score ≤ 40.29)	54	124
High (> 40.29)	7	1
AIR			0.001
Low (≤ 1)	3	24
Intermediate (1 < score ≤ 6)	51	102
High (> 6)	7	2
RIPASA			< 0.001
Low (≤ 3.5)	3	21
Intermediate (3.5 < score ≤ 7.5)	48	106
High (> 7.5)	10	1
AAS			< 0.001
Low (≤ 5)	3	33
Intermediate (5 < score ≤ 15)	50	90
High (> 15)	8	5

Values are presented as number (%), median (interquartile range, 25% to 75%), or number.

AIR, appendicitis inflammatory response; RIPASA, Raja Isteri Pengiran Anak Saleha Appendicitis; AAS, adult appendicitis score.