Table 1 Descriptive characteristics of the study samples (n = 75)

Age (days)

89

(37)

88

(29)

75

(50)

37

(21)

109

(48)

Hospital Stay (days)

0

(0)

3

(3)

8

(5)

14

(6)

0

(0)

RSV viral load (Ct)

50.0

(0)

22.4

(3.3)

27.0

(5.4)

23.6

(3.4)

50.0

(0)

Weight (gram)

N/A

N/A

14,674

(21111)

5516

(2002)

3874

(931)

5375

(2333)

Birth weight (gram)

2624

(768)

3323

(618)

3271

(656)

2867

(738)

3116

(677)

% antibiotics

0%

22%

7%

11%

8%

% breastfed

38%

67%

56%

72%

76%

% males

24%

56%

52%

44%

44%

Mean number of reads

27,449

(4464)

24,916

(4826)

21,787

(5776)

28,866

(32974)

22,658

(5208)

Total number of reads

5.76E+05

2.24E+05

5.88E+05

5.20E+05

5.66E+05

 Assigned at family

99.72%

(0.01%)

99.88%

(0.01%)

99.90%

(0.01%)

99.94%

(0.01%)

99.91%

(0.01%)

 Assigned at genus

94.72%

(0.07%)

97.91%

(0.03%)

98.98%

(0.02%)

98.15%

(0.03%)

97.89%

(0.04%)

 Assigned at species^a

21.22%

(0.19%)

8.07%

(0.06%)

10.25%

(0.09%)

10.27%

(0.09%)

8.43%

(0.17%)

Mean number of OTUs

203

(56)

167

(44)

139

(38)

150

(38)

160

(50)

Total number of OTUs

4270

1499

3756

2705

3999

Mean Chao index^b

176.8

(54.4)

151.7

(42.6)

131.1

(39.4)

137.5

(17.8)

150.2

(53.5)

Mean Shannon index^b

3.1

(1.1)

2.8

(0.7)

2.4

(0.8)

2.7

(0.7)

2.4

(0.8)

Mean PDWT index^b

6.0

(1.7)

5.6

(1.1)

5.1

(1.6)

4.9

(0.9)

6.1

(2.0)