Table 4. Testing significance of the association of "Amr sign" with other demographic and clinical attributes of patients with acute appendicitis.

Highly significant if p < 0.01, significant if p < 0.05, and nonsignificant if p > 0.05.

RIF, right iliac fossa

Variables/categories		"Amr sign"				Chi-square	p-value
		Negative		Positive
		n	%	n	%
Age groups	15-30 years	37	74.0%	50	58.1%	4.418	0.041
	31-50 years	13	26.0%	33	38.4%
	>50 years	0	0.0%	3	3.5%
Gender	Female	15	18.5%	17	14.9%	0.449	0.503
	Male	66	81.5%	97	85.1%
Vomiting	No	30	37.0%	50	43.9%	0.991	0.340
	Yes	51	63.0%	64	56.1%
Fever	No	54	66.7%	82	71.9%	0.622	0.430
	Yes	27	33.3%	32	28.1%
Tender RIF	Negative	9	11.1%	17	14.9%	0.592	0.442
	Positive	72	88.9%	97	85.1%
Cough signs	Negative	30	37.0%	36	31.6%	0.630	0.427
	Positive	51	63.0%	78	68.4%
Disposition	Operated	58	71.6%	94	82.5%	3.244	0.072
	Observed	23	28.4%	20	17.5%
Histopathology	Negative	37	45.7%	18	15.8%	20.892	0.000
	Positive	44	54.3%	96	84.2%
Previous admission	No	49	60.5%	73	64.0%	0.254	0.615
	Yes	32	39.5%	41	36.0%
Rebound tenderness	Negative	36	44.4%	51	44.7%	0.002	0.968
	Positive	45	55.6%	63	55.3%
Neutrophil shift to left	Negative	33	40.7%	52	45.6%	0.457	0.499
	Positive	48	59.3%	62	54.4%
Rovsing’s sign	Negative	44	54.3%	65	57.0%	0.140	0.709
	Positive	37	45.7%	49	43.0%
Migrating pain	Negative	36	44.4%	57	50.0%	0.586	0.444
	Positive	45	55.6%	57	50.0%