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Table 2 Caries increment at 2 years in relation to sex, baseline salivary characteristics and caries status

From: Predicting dental caries increment using salivary biomarkers in a remote Indigenous Australian child population

Variable

Incipient caries (ICDAS 1 to 2)

Advanced caries (ICDAS 3 to 6)

 

No caries at 2 year follow up (%)

With caries at 2 year follow up (%)

p

No caries at 2 year follow up (%)

With caries at 2 year follow up (%)

p

Sex

  

0.89

  

0.76

Male

12 (14.1)

73 (85.9)

 

39 (45.9)

46 (54.1)

 

Female

16 (13.4)

103 (86.6)

 

52 (42.3)

71 (57.7)

 

Comparison versus experimental group

  

0.01

  

0.02

Experimental group

22 (18.8)

95 (81.2)

 

61(52.1)

56 (47.9)

 

Comparison group

6 (6.6)

85 (93.4)

 

33(36.3)

58 (63.7)

 

Baseline caries status

  

0.01

  

0.04

Without caries(ICDAS 0)

5 (35.7)

9 (64.3)

 

10 (71.4)

4 (28.6)

 

With caries (ICDAS 1–6)

23 (11.9)

171 (88.1)

 

84 (43.3)

110 (56.7)

 

Salivary pH at baseline

  

0.52

  

0.45

 ≤ 6

5 (9.6)

24 (82.8)

 

15 (51.7)

14(48.3)

 

 > 6

23 (12.8)

156 (87.2)

 

79 (44.1)

100 (55.9)

 

Salivary flowrate per minute at baseline

  

0.97

  

0.21

 ≤ 5 ml

20 (13.5)

128 (86.5)

 

71 (48.0)

77 (52.0)

 

 > 5 ml

8 (13.3)

52 (86.7)

 

23 (38.3)

37 (61.7)

 

Total buffering capacity at baseline

  

0.37

  

0.89

 ≤ 9

9 (10.8)

74 (89.2)

 

38 (45.8)

45 (54.2)

 

 > 9

19 (15.2)

106 (84.8)

 

56 (44.8)

69 (55.2)

 

Salivary MS levels at baseline

  

0.04

  

0.01

 > 105 CFU/ml saliva

10 (9.8)

92 (90.2)

 

42 (41.2)

60 (58.8)

 

 ≤ 105 CFU/ml saliva

10 (22.2)

35 (77.8)

 

29 (64.4)

16 (35.6)

 

Salivary LB levels at baseline

  

0.97

  

0.70

 > 105 CFU/ml saliva

7 (13.5)

45 (86.5)

 

24 (46.2)

28 (53.8)

 

 ≤ 105 CFU/ml saliva

13 (13.7)

82 (86.3)

 

47 (49.5)

48 (50.5)

 

Salivary yeast counts

  

0.23

  

0.55

Moderate or heavy

5 (20.8)

19 (79.2)

 

13 (54.2)

11 (45.8)

 

None or light

15 (12.5)

105 (87.5)

 

57 (47.5)

63 (52.5)

 
  1. X2 Chi Square statistics, figures in bold are significant (p < 0.05). For some variables, number of participants does not add up to the total sample, due to missing data