Table 2 Characterization of pneumotypes

One week, n

One week, n

87

51

24

85

 Age at sampling in days, mean ± sd

8.1 ± 2.7

8.0 ± 3.7

7.6 ± 2.8

7.8 ± 3.0

8.0 ± 3.1

 SDI, mean ± sd

0.83 ± 0.51

1.31 ± 0.42

0.78 ± 0.49

1.57 ± 0.63

1.74 ± 0.46

 Observed Richness, mean ± sd

21.5 ± 11.4

24.3 ± 8.2

19.0 ± 8.0

23.4 ± 11.5

25.8 ± 9.6

 Exclusively breastfed, n(%)

266 (90.8%)

72 (83.7%)

47 (92.2%)

20 (83.3%)

72 (86.7%)

 Any antibiotic, n(%)

3 (1.0%)

2 (2.4%)

1 (2.0%)

1 (4.2%)

4 (4.9%)

 Caesarean section, n(%)

66 (22.2%)

13 (14.9%)

8 (15.7%)

1 (4.2%)

21 (24.7%)

 Siblings, n(%)

163 (55.1%)

47 (54.0%)

39 (76.5%)

12 (50.0%)

60 (70.6%)

 Mother asthmatic, n(%)

76 (25.7%)

20 (23.0%)

17 (33.3%)

6 (25.0%)

25 (29.4%)

 Male, n(%)

152 (51.2%)

47 (54.0%)

27 (52.9%)

13 (54.2%)

35 (41.2%)

One month, n

137

211

89

53

131

 Age at sampling in days, mean ± sd

31.3 ± 4.7

32.6 ± 5.3

32.2 ± 5.8

31.1 ± 3.7

32.5 ± 5.6

 SDI, mean ± sd

0.87 ± 0.55

1.41 ± 0.48

0.77 ± 0.42

1.40 ± 0.48

1.64 ± 0.43

 Observed Richness, mean ± sd

22.5 ± 13.2

29.1 ± 10.8

19.1 ± 7.2

22.3 ± 8.8

30.5 ± 14.5

 Exclusively breastfed, n(%)

96 (70.1%)

152 (72.7%)

76 (85.4%)

41 (78.8%)

108 (83.1%)

 Any antibiotic, n(%)

3 (2.2%)

8 (3.8%)

3 (3.5%)

6 (11.8%)

3, (2.3%)

 Caesarean section, n(%)

41 (29.9%)

47 (22.3%)

11 (12.4%)

18 (34.0%)

20 (15.3%)

 Siblings, n(%)

68 (49.6%)

98 (46.4%)

72 (80.9%)

23 (43.4%)

99 (76.2%)

 Mother asthmatic, n(%)

37 (27.2%)

59 (28.1%)

26 (29.5%)

14 (26.4%)

27 (20.6%)

 Male, n(%)

69 (50.4%)

114 (54.0%)

46 (51.7%)

30 (56.6%)

61 (46.6%)

Three months Samples, n

54

196

165

30

178

 Age at sampling in days, mean ± sd

93.0 ± 5.9

92.9 ± 6.3

92.6 ± 7.1

91.7 ± 4.6

93.9 ± 6.6

 SDI, mean ± sd

1.24 ± 0.53

1.47 ± 0.50

0.97 ± 0.51

1.72 ± 0.43

1.80 ± 0.47

 Observed Richness, mean ± sd

31.6 ± 10.1

34.4 ± 12.1

24.39 ± 10.5

28.7 ± 11.3

35.0 ± 13.4

 Exclusively breastfed, n(%)

34 (64.2%)

65.5% (127)

66.2% (102)

20 (66.7%)

111 (65.7%)

 Any antibiotic, n(%)

2 (3.8%)

13 (6.8%)

5 (3.3%)

0 (0.0%)

15 (8.9%)

 Caesarean section, n(%)

13 (24.1%)

46 (23.5%)

28 (17.0%)

9 (30.0%)

34 (19.1%)

 Siblings, n(%)

14 (26.4%)

85 (43.4%)

126 (76.4%)

13 (43.3%)

116 (65.2%)

 Mother asthmatic, n(%)

14 (25.9%)

47 (24.1%)

46 (28.0%)

5 (16.7%)

51 (28.8%)

 Male, n(%)

29 (53.7%)

99 (50.5%)

86 (52.1%)

9 (30.0%)

92 (51.7%)