Table 2 Questionnaire scores and clinical examination data at baseline, 6 and 18 months

Questionnaire

Knowledge (%)

71.0 (67.7, 74.0)

75.4 (71.7, 78.8)*

81.7 (77.8, 85.0)*

66.9 (62.7, 70.8)

78.7 (74.9, 82.1)*

78.9 (75.2, 82.2)*

Behavior (%)

71.7 (68.3, 74.9)

72.0 (68.8, 74.9)

69.3 (66.0, 72.4)

69.0 (65.9, 71.8)

71.2 (68.5, 73.8)

68.6 (65.9, 71.2)

Attitude (%)

80.8 (75.9, 84.8)

83.3 (78.7, 87.1)

81.6 (76.8, 85.6)

81.8 (77.5, 85.5)

83.4 (78.8, 87.2)

79.1 (74.7, 82.9)

Clinical examination

Hygiene Index (%)

64.6 (38.0, 83.3)

69.4 (46.7, 83.3)

55.6 (29.2, 79.2)

57.7 (30.6, 80.6)

50.0 (29.2, 76.3)

66.7 (37.6, 83.3)

Gingival Index (%)

31.2 (19.4, 41.7)

33.3 (22.2, 47.2)

22.2 (12.5, 43.8)

34.4 (17.7, 48.7)

36.1 (22.2, 52.6)

26.0 (8.3, 41.1)*

DMFT (Mean, SD)

0.77 (1.13)

-

1.01 (1.45)*

0.55 (1.16)

-

0.87 (1.30)*