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Table 2 Univariate and multivariate logistic regression comparing enteropathogen infection in the pre- vs post-rotavirus vaccine introduction periods (n = 718)

From: Differences in epidemiology of enteropathogens in children pre- and post-rotavirus vaccine introduction in Kilifi, coastal Kenya

Pathogen Type

Pathogen

Total

(n = 718)

Prevalence

Univariate Logistic Regression

Multivariable# Logistic Regression

Pre-vaccine

(n = 241)

Post-vaccine

(n = 477)

n (%)

# + ve cases

Proportion

(95% CI)

# + ve cases

Proportion

(95% CI)

OR (95% CI)

p value

OR (95% CI)

p value

Virus

Adenovirus 40/41

49 (6.8)

14

5.8 (3.2–9.6)

35

7.3 (45.2–10.1)

1.28 (0.68, 2.44)

0.444

1.16 (0.60, 2.24)

0.667

Any Adenovirus

104 (14.5)

28

11.6 (7.9–16.4)

76

15.9 (12.8–19.5)

1.44 (0.91, 2.29)

0.122

1.33 (0.82, 2.13)

0.247

Rotavirus group A

178 (24.8)

66

27.4 (21.9–33.5)

112

23.5 (19.8–27.6)

0.81 (0.57, 1.16)

0.253

0.97 (0.66, 1.42)

0.879

Norovirus GI/GII

103 (14.4)

27

11.2 (7.5–15.9)

76

15.9 (12.8–19.5)

1.50 (0.94, 2.40)

0.089

1.53 (0.94, 2.49)

0.086

Astrovirus

34 (4.7)

12

5.0 (2.6–8.5)

22

4.6 (2.9–7.0)

0.81 (0.57, 1.16)

0.253

0.97 (0.66, 1.42)

0.879

Sapovirus

38 (5.3)

19

7.8 (4.8–12.0)

19

4.0 (2.4–6.2)

0.49 (0.25, 0.93)

0.030

0.64 (0.32, 1.28)

0.205

Enterovirus

193 (26.9)

65

27.0 (21.5–33.0)

128

26.8 (23.0–31.1)

0.99 (0.70, 1.41)

0.969

0.97 (0.67, 1.39)

0.851

Parechovirus

119 (16.6)

47

19.5 (14.7–25.1)

72

15.1 (12.0–18.6)

0.73 (0.49, 1.10)

0.135

0.73 (0.48, 1.12)

0.158

Hepatitis A virus

11 (1.5)

1

0.4 (0.0–2.3)

10

2.0 (1.0–3.8)

5.14 (0.65, 40.38)

0.120

4.00 (0.50, 31.77)

0.190

Hepatitis E virus

1 (0.14)

0

0 (0–1.5)

1

0.2 (0.0–1.2)

NA

 

NA

 

Cytomegalovirus

57 (7.9)

10

4.2 (2.0–7.5)

47

9.9 (7.3–12.9)

2.53 (1.25, 5.09)

0.010

2.81 (1.36, 5.81)

0.005

Bacteria

Enteropathogenic E. coli

217 (30.2)

68

28.2 (22.6–34.4)

149

31.2 (27.1–35.6)

1.16 (0.82, 1.63)

0.405

1.24 (0.87, 1.76)

0.240

Enteroaggregative E. coli

302 (42.1)

86

35.7 (29.6–42.1)

216

45.3 (40.8–50.0)

1.49 (1.08, 2.05)

0.014

1.58 (1.13, 2.20)

0.007

Verotoxogenic E. coli

4 (0.6)

0

0 (0–1.5)

4

0.8 (0.2–2.1)

NA

0.176

NA

 

Shigella spp.

83 (11.6)

21

8.7 (5.5–13.0)

62

13.0 (10.2–16.4)

1.57 (0.93, 2.64)

0.092

1.49 (0.87, 2.54)

0.144

C. perfringens/difficile

33 (4.6)

8

3.3 (1.4–6.4)

25

5.2 (3.4–7.6)

1.61 (0.72, 3.63)

0.250

1.51 (0.66, 3.47)

0.334

Salmonella spp.

15 (2.1)

5

2.0 (0.7–4.8)

10

2.1 (1.0–3.8)

1.01 (0.34, 2.99)

0.985

1.10 (0.35, 3.42)

0.877

C. jejuni/coli

56 (7.8)

17

7.1 (4.2–11.1)

39

8.2 (5.9–11.0)

1.17 (0.65, 2.12)

0.597

1.13 (0.61, 2.07)

0.706

V. cholerae

11 (1.53)

0

0 (0–1.5)

11

2.3 (1.2–4.1)

NA

 

NA

 

Aeromonas spp.

7 (1.0)

3

1.3 (0.3–3.6)

4

0.8 (0.2–2.1)

0.67 (0.15, 3.02)

0.603

0.74 (0.15, 3.56)

0.707

Y. enterocolitica

2 (0.3)

0

0 (0–1.5)

2

0.3 (0.0–1.5)

NA

 

NA

 

Protozoa

Cryptosporidium spp.

98 (13.7)

28

11.6 (7.9–16.4)

70

14.7 (11.6–18.2)

1.31 (0.82, 2.09)

0.261

1.36 (0.83, 2.20)

0.219

D.fragilis

42 (5.9)

5

2.0 (0.7–4.8)

37

7.8 (5.5–10.5)

3.97 (1.54, 10.23)

0.004

3.90 (1.49, 10.21)

0.006

G. lambia

81 (11.3)

27

11.2 (7.5–15.9)

54

11.3 (8.6–14.5)

1.01 (0.62, 1.65)

0.963

0.96 (0.57, 1.61)

0.881

C. belli

1 (0.14)

0

0 (0–1.5)

1

0.4 (0.0–1.2)

NA

 

NA

 

C. cayetanensis

2 (0.3)

2

0.8 (0.1–3.0)

0

0.0 (0.0–0.7)

NA

0.110

NA

 

Helminth

Strongyloides spp.

19 (2.7)

2

0.8 (0.1–3.0)

17

3.6 (2.1–5.7)

4.42 (1.01, 19.27)

0.048

4.60 (1.03, 20.55)

0.046

  1. # All models are adjusted for age, vesikari score, fatality, length of stay (LOS), HIV status, and gender; due to high coinfection rates, enteropathogens are modelled separately; the bold emphasis of some of the p -values and OR (95% CI) indicate those statistically significant