Table 1 Socio-demographic distribution of 1,507 survey participants, of the total Korean population, and cases diagnosed as tension-type headache

Gender

 Men

745 (49.4^a)

17,584,365 (49.6)

0.978^b

243

32.5 (29.1-35.9)

 Women

762 (50.6^a)

17,198,350 (50.4)

220

29.1 (25.9-32.3)

Age (years)

 19-29

241 (22.8^a)

7,717,947 (22.2)

0.99^b

69

27.8 (23.1-32.6)

 30-39

340 (23.5^a)

8,349,487 (24.0)

107

31.8 (26.9-36.7)

 40-49

418 (23.0^a)

8,613,110 (24.8)

122

29.7 (24.9-34.6)

 50-59

324 (19.8^a)

6,167,505 (17.7)

117

36.5 (31.0-42.0)

 60-69

184 (10.8^a)

3,934,666 (11.3)

48

26.6 (19.8-33.5)

Size of residential area

 Large city

704 (46.7^a)

16,776,771 (48.2)

0.89^b

222

31.5 (28.1-34.9)

 Medium-to-small city

658 (43.7^a)

15,164,345 (43.6)

209

31.8 (28.3-35.4)

 Rural area

145 (9.6^a)

2,841,599 (8.2)

32

22.3 (15.3-29.2)

Educational level

 Middle school or less

240 (15.9^a)

6,291,149 (19.0)

0.84^b

79

33.8 (27.6-40.1)

 High school

712 (47.2^a)

14,530,056 (43.8)

241

34.3 (30.6-37.9)

 College or more

555 (36.8a)

12,331,670 (37.2)

143

25.9 (22.5-29.4)

Total

1,507 (100.0^a)

34,782,715 (100.0)

463

30.7 (28.5-33.1)