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Table 2 Numbers and percentages of adolescents who have untreated dental caries (D rate) by survey year in Gangneung

From: Inequalities in oral health among adolescents in Gangneung, South Korea

D rate

201l (1st grade, 15-yr-old)

N = 1267

2013 (3rd grade, 17-yr-old)

N = 1073

Total

217(17.1)

 

153(14.3)

 

Gender

 Girls

92(15.9)

 

62(12.2)

 

 Boys

125(18.1)

 

91(16.1)

 

School type

 General

94(12.3)

***

70(9.9)

***

 Vocational

123(24.6)

 

83(22.8)

 

Father’s education

 College or above

50(10.5)

***

33(7.7)

***

 High school or below

137(19.8)

 

98(17.0)

 

Mother’s education

 College or above

46(13.3)

 

31(10.3)

 

 High school or below

143(17.6)

 

101(14.4)

 

Perceived economic status

 High

145(15.6)

*

99(12.6)

**

 Low

72(21.4)

 

54(19.2)

 

FAS

 High

171(15.6)

***

115(12.5)

***

 Low

46(27.4)

 

38(26.0)

 

Frequency of tooth-brushing

 ≥2

182(16.2)

*

137(14.0)

 

 < 2

35(24.5)

 

16(17.4)

 

Frequency of eating snacks

 < 1

71(15.7)

 

118(13.4)

*

 ≥1

131(17.3)

 

35(18.9)

 

Frequency of drinking soda

 < 1

99(15.1)

 

134(13.6)

 

 ≥1

95(18.6)

 

19(21.1)

 

Smoking experience

 No

124(13.8)

***

91(12.0)

**

 Yes

93(25.3)

 

62(19.6)

 

Annual visits to dental clinic

 Yes

84(14.6)

*

55(10.7)

**

 No

133(19.2)

 

98(17.6)

 
  1. *p < 0.05, **p < 0.01, ***p < 0.001