Table 1. Clinical characteristics of patients with each type of stone.

Stone Type			Cholesterol	Pigment	Calcium carbonate	Phosphate	Calcium stearate	Protein	Cystine	Mixed	Total
No			297	217	139	12	9	3	1	129	807
Rate (%)			36.8	26.9	17.2	1.5	1.1	0.4	0.1	16	100
Age (years) & Gender	Male	<20	2	1	0	0	0	0	0	0	3
		20∼29	13	8	3	0	0	0	0	6	30
		30∼39	55	28	13	1	0	1	0	11	109
		40∼49	39	42	36	3	0	1	0	18	139
		50∼59	11	27	19	3	1	0	0	20	81
		60∼69	9	16	13	2	1	0	0	9	50
		≥70	3	3	2	0	0	0	0	3	11
		Total	132	125	86	9	2	2	0	67	423
	Female	<20	2	0	0	1	0	0	0	0	3
		20∼29	18	5	2	0	0	1	0	6	32
		30∼39	61	15	13	0	0	0	1	14	104
		40∼49	45	12	18	0	2	0	0	16	93
		50∼59	19	34	11	0	2	0	0	17	83
		60∼69	16	24	6	2	1	0	0	8	57
		≥70	4	2	3	0	2	0	0	1	12
		Total	165	92	53	3	7	1	1	62	384
	Age average		41.6±11.9	48. 6±12.0	47.9±10.9	49.5±16.0	58. 6±11.6	34.0±11.5	38	47.0±12.6	45.7±12.4
Medical history (years)	Range	≤1	166	99	84	6	4	3	1	71	434
		1∼5	86	65	29	2	5	0	0	33	220
		>5	45	53	26	4	0	0	0	25	153
	Average		2. 6±4.0	3.4±4.6	2.7±4.4	4.8±7.3	1.5±1.2	0.1±0.0	0.1	2.7±3.5	2.8±4.2
BMI	Range	<24	162	158	77	7	9	3	1	78	495
		≥24	135	59	62	5	0	0	0	51	312
	Average		23.7±3.5	22.3±3.4	23.7±3.4	22.3±4.6	20.6±2.5	21.4±0.1	20.3	23.2±3.7	23.2±3.5