Table 3 Relative contributions of oral and nasal microbiota to the lung microbiota

Subject and site

Oral (% ± SD^a)

Nasal (% ± SD^a)

Unknown (% ± SD^a)

 1 Bronchus

16.9 ± 0.62

1.3 ± 0.23

81.6 ± 0.71

 2 Bronchus

22.0 ± 0.60

4.0 ± 2.1

74.0 ± 2.4

 3 Bronchus

5.7 ± 0.49

1.2 ± 0.64

93.1 ± 0.70

 4 Bronchus

42.9 ± 0.62

4.7 ± 0.30

52.4 ± 0.76

 5 Bronchus

25.9 ± 0.97

5.4 ± 0.36

68.7 ± 0.99

 6 Bronchus

27.9 ± 0.34

12.0 ± 0.27

60.0 ± 0.36

 7 Bronchus

17.9 ± 0.36

8.0 ± 0.32

74.0 ± 0.42

 8 Bronchus

29.9 ± 0.32

11.1 ± 0.35

59.1 ± 0.46

 9 Bronchus

15.4 ± 0.78

1.9 ± 0.25

82.6 ± 0.84

Bronchus average

22.7%

5.5%

71.7%

 1 Peripheral lung

16.9 ± 0.70

13.5 ± 1.05

69.8 ± 1.1

 2 Peripheral lung

8.8 ± 0.75

13.3 ± 2.9

77.9 ± 3.4

 3 Peripheral lung

13.5 ± 1.0

1.6 ± 0.57

84.9 ± 1.4

 4 Peripheral lung

53.9 ± 0.71

3.2 ± 0.27

42.9 ± 0.70

 5 Peripheral lung

30.4 ± 0.33

10.5 ± 0.37

59.1 ± 0.39

 6 Peripheral lung

18.2 ± 0.57

7.7 ± 0.35

74.1 ± 0.78

 7 Peripheral lung

16.9 ± 0.66

11.0 ± 0.84

72.1 ± 1.2

 8 Peripheral lung

NA^b

NA^b

NA^b

 9 Peripheral lung

9.9 ± 0.45

9.1 ± 0.77

80.1 ± 0.58

Peripheral lung average

21.1%

8.7%

70.1%