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Table 2 Demographic characteristics of infants with invasive Group B Streptococcal (GBS) disease

From: Burden and risk factors of invasive group B Streptococcus disease among neonates in a Chinese maternity hospital

Varibles

All cases

(n = 74)

EOD1

(n = 65)

LOD2

(n = 9)

OR(95%CI)3

p-value4

Gender

 Male

33

27(41.5)

6(66.7)

0.36(0.08–1.55)

0.176

Gestational Age

 ≥37 weeks

55

48(73.8)

7(77.8)

0.81(0.15–4.27)

1

 < 37 weeks

19

17(26.2)

2(22.2)

1.24(0.23–6.56)

1

 < 37 - ≥34 weeks

13

12(18.5)

1(11.1)

1.81 (0.21–15.89)

1

 < 34 weeks

6

5(7.7)

1(11.1)

0.67(0.07–6.45)

0.554

Birth Weight

 ≥2500 g

58

51(78.5)

7(77.8)

1.04 (0.19–5.58)

1

 < 2500 g

16

14(21.5)

2(22.2)

0.96 (0.18–5.15)

1

 1500–2499 g

15

13(20)

22(22.2)

0.88(0.16–4.72)

1

 < 1500 g

1

1(1.5)

0(0)

 

1

Mode of delivery 1

 Vertex delivery

42

35(53.8)

7(77.8)

0.33(0.06–1.73)

0.284

 Caesarean-section

28

26(40)

2(22.2)

2.33(0.45–12.13)

0.468

 Obstetric forceps

4

4(6.2)

0(0)

 

1

 Membrane sweeping

33

28(43.1)

5(55.6)

0.61(0.15–2.46)

0.501

 Non-resident mother

32

28(43.1)

4(44.4)

0.95(0.23–3.85)

1

  1. 1 EOD-Early-onset disease
  2. 2 LOD-Late-onset disease
  3. 3 OR(95%CI)-calculated odds ratio with 95% confidence comparing EOD to LOD
  4. 4p-value-using Chi-squared, Fischer exact or Wilcoxon rank-sum (Mann-Whitney) test