Table 3 Differences in eating behavior among respondents by gender, age, and educational attainment

Gender

Male n (%)

33 (1.06)

1353 (43.65)

1383 (44.61)

331 (10.68)

182 (5.87)

2155 (69.52)

659 (21.26)

104 (3.35)

Femalen (%)

40 (0.78)

2128 (41.29)

2329 (45.19)

657 (12.75)

322 (6.25)

3506 (68.02)

1158 (22.47)

168 (3.26)

χ2

11.44

2.42

P

0.01

0.49

Age

 < 18 years n (%)

4 (2.05)

76 (38.97)

82 (42.05)

33 (16.92)

12 (6.15)

110 (56.41)

57 (29.23)

16 (8.21)

18–45 years n (%)

37 (0.64)

2449 (42.17)

2703 (46.55)

618 (10.64)

266 (4.58)

3792 (65.30)

1536 (26.45)

213 (3.67)

 > 45 years n (%)

32 (1.42)

956 (42.45)

927 (41.16)

337 (14.96)

226 (10.04)

1759 (78.11)

224 (9.95)

43 (1.91)

χ2

55.12

357.55

P

 < 0.001

 < 0.001

Educational Attainment

HS or B n (%)

33 (1.78)

1021 (54.98)

551 (29.67)

252 (13.57)

167 (8.99)

1378 (74.21)

234 (12.60)

78 (4.20)

C n (%)

39 (0.65)

2335 (39.18)

2914 (48.90)

671 (11.26)

320 (5.37)

4011 (67.31)

1446 (24.27)

182 (3.05)

P n (%)

1 (0.23)

125 (28.54)

247 (56.39)

65 (14.84)

17 (3.88)

272 (62.10)

137 (31.28)

12 (2.74)

χ2

265.9

158.46

P

 < 0.001

 < 0.001

Total n (%)

73 (0.88)

3481 (42.17)

3712 (44.97)

988 (11.97)

504 (6.11)

5661 (68.58)

1817 (22.01)

272 (3.30)

Frequency of drinking tea

Frequency of drinking alcohol

Never

Occasionally, less than 2 times per week

Often, but less than 1 time per day

Always, 1 or more times per day

Never

Occasionally, less than 2 times per week

Often, but less than 1 time per day

Always, 1 or more times per day

Gender

Male n (%)

57 (1.84)

795 (25.65)

686 (22.13)

1562 (50.39)

364 (11.74)

1624 (52.39)

953 (30.74)

159 (5.13)

Femalen (%)

353 (6.85)

2409 (46.74)

1091 (21.17)

1301 (25.24)

1280 (24.84)

3339 (64.78)

493 (9.57)

42 (0.81)

χ2

673.41

859.54

P

 < 0.001

 < 0.001

Age

 < 18 years n (%)

23 (11.79)

87 (44.62)

34 (17.44)

51 (26.15)

119 (61.03)

60 (30.77)

15 (7.69)

1 (0.51)

18–45 years n (%)

343 (5.91)

2505 (43.14)

1352 (23.28)

1607 (27.67)

1232 (21.22)

3540 (60.96)

913 (15.72)

122 (2.10)

 > 45 years n (%)

44 (1.95)

612 (27.18)

391 (17.36)

1205 (53.51)

293 (13.01)

1363 (60.52)

518 (23.00)

78 (3.46)

χ2

522.42

328.47

P

 < 0.001

 < 0.001

Educational Attainment

HS or B n (%)

123 (6.62)

731 (39.36)

279 (15.02)

724 (38.99)

481 (25.90)

1088 (58.59)

214 (11.52)

74 (3.98)

C n (%)

279 (4.68)

2336 (39.20)

1374 (23.06)

1970 (33.06)

1107 (18.58)

3608 (60.55)

1123 (18.85)

121 (2.03)

P n (%)

8 (1.83)

137 (31.28)

124 (28.31)

169 (38.58)

56 (12.79)

267 (60.96)

109

(24.89)

6 (1.37)

χ2

95.4

132.92

P

 < 0.001

 < 0.001

Total

n (%)

410 (4.97)

3204 (38.82)

1777 (21.53)

2863 (34.69)

1644 (19.92)

4963 (60.13)

1446 (17.52)

201 (2.44)

Frequency of eating hard foods

Frequency of eating super-hard foods

Never

Occasionally, less than 2 times per week

Often, but less than 1 time per day

Always, 1 or more times per day

Never

Occasionally, less than 2 times per week

Often, but less than 1 time per day

Always, 1 or more times per day

Gender

Male n (%)

51 (1.65)

1780 (57.42)

1151 (37.13)

118 (3.81)

178 (5.74)

2398 (77.35)

498 (16.06)

26 (0.84)

Female n (%)

118 (2.29)

2932 (56.89)

1890 (36.67)

214 (4.15)

227 (4.40)

3820 (74.12)

1044 (20.26)

63 (1.22)

χ2

4.71

30.6

P

0.195

 < 0.001

Age

 < 18 years n (%)

12 (6.15)

119 (61.03)

56 (28.72)

8 (4.10)

24 (12.31)

125 (64.10)

43 (22.05)

3 (1.54)

18–45 years n (%)

128 (2.20)

3359 (57.84)

2110 (36.34)

210 (3.62)

214 (3.69)

4300 (74.05)

1224 (21.08)

69 (1.19)

 > 45 years n (%)

29 (1.29)

1234 (54.80)

875 (38.85)

114 (5.06)

167 (7.42)

1793 (79.62)

275 (12.21)

17 (0.75)

χ2

41.1

151.06

P

 < 0.001

 < 0.001

Educational Attainment

HS or B n (%)

46 (2.48)

1302 (70.11)

442 (23.80)

67 (3.61)

153 (8.24)

1474 (79.38)

213 (11.47)

17 (0.92)

C n (%)

119 (2.00)

3229 (54.19)

2375 (39.86)

236 (3.96)

229 (3.84)

4440 (74.51)

1224 (20.54)

66 (1.11)

P n (%)

4 (0.91)

181 (41.32)

224 (51.14)

29 (6.62)

23 (5.25)

304 (69.41)

105 (23.97)

6 (1.37)

χ2

220.45

132.61

P

 < 0.001

 < 0.001

Total n (%)

169 (2.05)

4712 (57.09)

3041 (36.84)

332 (4.02)

405 (4.91)

6218 (75.33)

1542 (18.68)

89 (1.08)

Frequency of using teeth to bite crab shells or open beer caps

Never

Occasionally, less than 2 times per week

Often, but less than 1 time per day

Always, 1 or more times per day

Gender

Male n (%)

1186 (38.26)

1645 (53.06)

248 (8.00)

21 (0.68)

Female n (%)

2571 (49.88)

2107 (40.88)

454 (8.81)

22 (0.43)

χ2

124.51

P

 < 0.001

Age

 < 18 years n (%)

110 (56.41)

67 (34.36)

17 (8.72)

1 (0.51)

18–45 years n (%)

2459 (42.35)

2718 (46.81)

594 (10.23)

36 (0.62)

 > 45 years n (%)

1188 (52.75)

967 (42.94)

91 (4.04)

6 (0.27)

χ2

131.53

P

 < 0.001

Educational Attainment

HS or B n (%)

993 (53.47)

774 (41.68)

81 (4.36)

9 (0.48)

C n (%)

2621 (43.98)

2748 (46.12)

558 (9.36)

32 (0.54)

P n (%)

143 (32.65)

230 (52.51)

63 (14.38)

2 (0.46)

χ2

116.59

P

 < 0.001

Total n (%)

3757 (45.52)

3752 (45.46)

702 (8.50)

43 (0.52)