Table 2 . Descriptive statistics of the less than 18 years old (n= 275) .

Variables		Number (%)
Gender
	Male	133 (48.4)
	Female	142 (51.6)
Age/year
	<1	48 (17.5)
	1-10	156 (56.7)
	11-18	71 (25.8)
Type of health insurance*
	Rural health insurance plan	226 (82.2)
	Medical services organization	32 (11.6)
	Social security fund	11 (4.0)
	Militarily force insurance	6 (2.2)
The Number of visits/year
	1	125 (45.5)
	2	121 (44.0)
	3	24 (8.7)
	4≤	5 (1.8)
The main complaints
	Common cold	172 (62.5)
	Fever	85 (30.9)
	Sore throat	12 (4.4)
	Stomach ache	4 (1.5)
	Dysmenorrhea	2 (0.7)