Skip to main content

Table 1 The prevalence of temporomandibular disorders (TMD) according to general characteristics of study population

From: The associations between work-related factors and temporomandibular disorders among female full-time employees: findings from the Fourth Korea National Health and Nutrition Examination Survey IV (2007–2009)

 

Prevalence of TMD

No N (%)

Yes N(%)

P valuea

Total

1,405(87.2)

207(12.8)

 

Age (years)

 20–39

647(81.6)

144(18.4)

<  0.001

 40–54

579(92.7)

47(7.3)

 55–64

179(94.1)

16(5.9)

Household income

 1Q(High)

485(85.4)

79(14.6)

0.526

 2Q

426(88.0)

58(12.0)

 3Q

360(88.4)

46(11.6)

 4Q(Low)

134(85.1)

24(14.9)

Educational status

  ≤ Primary school

219(92.9)

20(7.1)

<  0.001

 Middle school

161(92.8)

12(7.2)

 High school

506(87.9)

70(12.1)

  ≥ College

519(82.6)

105(17.4)

Marital status

 No

303(78.9)

83(21.1)

<  0.001

 Yes

1,102(90.4)

124(9.6)

Problem drinking

 No

1,329(87.8)

183(12.2)

0.001

 Yes

76(74.9)

24(25.1)

Smoking

 Non-smoking

1,260(87.8)

172(12.2)

0.057

 Ex-smoker

53(79.6)

15(20.4)

 Current smoking

92(82.2)

20(17.8)

Exercise

 No

1,219(87.7)

166(12.3)

0.036

 Yes

186(81.7)

41(18.3)

Sleep duration

  ≤ 6 h

565(85.3)

92(14.7)

0.159

  > 6 h

840(88.1)

115(11.9)

Obesity

 Under weight

80(81.0)

21(19.0)

0.172

 Normal

1,009(87.0)

143(13.0)

 Over weight

316(88.5)

43(11.5)

Rheumatoid arthritis

 No

1,391(86.9)

206(13.1)

0.715

 Yes

14(90.7)

1(9.3)

Osteoarthritis

 No

1,296(86.9)

191(13.1)

1.000

 Yes

109(86.9)

16(13.1)

Stress

 Low

941(90.1)

108(9.9)

<  0.001

 High

464(81.1)

99(18.9)

Self-rated health

 Excellent/good

639(87.6)

94(12.4)

0.520

 Fair/bad

766(86.4)

113(13.6)

Depressive symptoms

 No

1,193(87.2)

172(12.8)

0.389

 Yes

212(85.0)

35(15.0)

  1. aχ2 test