Table 7. Comparison of the Classification of Incidental Findings and Gender, Age Groups, and Body Regions .

		Group 1		Group 2		Group 3		Total		P Value
		(n=624)		(n=983)		(n=195)		(n=1802)
		n	%	n	%	n	%	n	%
Gender	Male	467	74.8	747	76.0	149	76.4	1363	75.6	0.573*
	Female	157	25.2	236	24.0	46	23.6	439	24.4
Age groups	0-19	27	4.3	55	5.6	3	1.5	85	4.8	0.430**
	20-39	176	28.2	284	28.9	38	19.5	498	27.6
	40-59	258	41.4	443	45.1	99	50.8	800	44.3
	60-79	145	23.3	185	18.8	47	24.1	377	20.9
	≥ 80	18	2.8	16	1.6	8	4.1	42	2.4
Regions	Head & Neck	141	22.6	252 b	25.7	33 a	16.9	426	23.6	< 0.001**
	Thorax	84	13.5	142	14.5	45 b	23.1	271	15.0
	Abdominopelvic	47 a	7.5	467 b	47.5	91 b	46.7	605	33.6
	Spinal column & cord	325 b	52.1	26 a	2.6	1 a	0.5	352	19.5
	Extremities	13	2.1	18	1.8	- a	-	31	1.7
	Vascular structures	14 a	2.2	78 b	7.9	25 b	12.8	117	6.6

^*Linear by linear association test result. ^**Monte Carlo (2-sided) P value. ^aNegative significant z-score. ^bPositive significant z-score.