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Table 1 Oral health knowledge: Data and crude statistical comparisons (X2) between 1985 & 1996

From: Advances in oral health knowledge of Greek navy recruits and their socioeconomic determinants

Year

Educational Status

Statistic

 

High

Medium

Low

 

Q1.

Gingival bleeding considered normal (positive answer)

1985

187 (59.2%)

397 (63.7%)

412 (72.0%)

X2 = 10.8

1996

150 (47.9%)

289 (54.9%)

311 (75.1%)

P-value = 0.001

Q2.

Gingivitis is the cause of loosing teeth (positive answer)

1985

102 (32.3%)

83 (13.3%)

69 (12.1%)

X2 = 49.6

1996

119 (38.0%)

84 (16.0%)

147 (35.5%)

P-value < 0.001

Q3.

Chewing hard foods cause gingival bleeding (positive answer)

1985

122 (59.2%)

218 (63.7%)

331 (72.0%)

X2 = 8.4

1996

94 (47.9%)

170 (54.9%)

224 (75.1%)

P-value = 0.004

Q4.

Knowing what gingivitis is (positive answer)

1985

89 (28.2%)

38 (6.1%)

30 (5.2%)

X2 = 678.9

1996

270 (86.3%)

273 (51.9%)

170 (41.1%)

P-value < 0.001

Q5.

Toothpaste (by itself) treat gingivitis (positive answer)

1985

108 (34.2%)

293 (47.0%)

378 (66.1%)

X2 = 18.2

1996

81 (25.9%)

215 (40.9%)

248 (59.9%)

P-value < 0.001

Q6.

Toothpicks alone are sufficient to clean teeth (positive answer)

1985

82 (75.9%)

183 (29.4%)

358 (62.6%)

X2 = 343.1

1996

19 (6.1%)

42 (19.5%)

62 (25.0%)

P-value < 0.001

Q7.

Selecting the best combination of devices to clean teeth

1985

18 (5.7%)

24 (3.9%)

10 (1.7%)

X2 = 10.8

1996

92 (29.4%)

75 (14.3%)

32 (7.7%)

P-value = 0.001