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Table 1 Demographics of the study population

From: Old age and other factors associated with salivary microbiome variation

Demographics

 

Young (18–45)

Middle age (46–64)

p value

Old (65–94)

p value

N = 85

N = 101

N = 85

Gender*

Female

59

56

 

49

 
 

Male

26

45

p < 0.0688

36

p < 0.1513

Tobacco use*

Yes

11

21

 

17

 
 

No

74

80

p < 0.1765

68

p < 0.3012

Periodontal disease*

Yes

21

43

 

23

 
 

No

64

58

p < 0.0131

62

p < 0.8611

Dentate*

Yes

82

81

 

46

 
 

No

3

20

p < 0.0006

39

p < 0.00001

Caries** ***

Mean

4.87 ± 0.85

3.82 ± 0.73

p < 0.35

1.3 ± 0.35

p < 0.0001

Age**

Mean

33.7 ± 1.3

56.6 ± 5.1

p < 7.47 × 10−54

73.0 ± 6.5

p < 1.006 × 10−82

Medication Count**

Average

1.31 ± 2.53

3.46 ± 4.42

p < 2.55 × 10−5

5.08 ± 6.46

p < 2.36 × 10−11

  1. *Fisher exact test versus young
  2. **Student t-test versus young
  3. ***2 subjects in Young and 1 in Middle age group unknown caries level