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Table 3 Relationship between pneumococcal vaccination status and pneumococcal carriage in children with asthma

From: Streptococcus pneumoniae colonisation in children and adolescents with asthma: impact of the heptavalent pneumococcal conjugate vaccine and evaluation of potential effect of thirteen-valent pneumococcal conjugate vaccine

 

Vaccinated with PCV7 (n = 195) n (%)

Not vaccinated against pneumococcus (n = 228) n (%)

Crude OR (95 % CI)

OR (95 % CI)a

Pneumococcal carrier status

 Any serotype

  Non-carriers

102 (44.2)

129 (55.8)

1 (reference)

1 (reference)

  Carriers

93 (48.4)

99 (51.6)

1.19 (0.81–1.74)

1.05 (0.70–1.58)

 Serotypes in PCV7

  Non-carriers

107 (43.8)

137 (56.2)

1 (reference)

1 (reference)

  Carriers

88 (49.2)

91 (50.8)

1.24 (0.84–1.82)

1.08 (0.72–1.62)

 Six additional serotypes in PCV13

  Non-carriers

162 (46.7)

185 (53.3)

1 (reference)

1 (reference)

  Carriers

33 (43.4)

43 (56.6)

0.88 (0.53–1.45)

0.76 (0.45–1.28)

Subgroup aged <10 years

(n = 95)

(n = 81)

  

 Any serotype

  Non-carriers

45 (54.2)

38 (45.8)

1 (reference)

1 (reference)

  Carriers

50 (53.8)

43 (46.2)

0.98 (0.54–1.78)

1.01 (0.55–1.86)

 Serotypes in PCV7

    

  Non-carriers

49 (55.1)

40 (44.9)

1 (reference)

1 (reference)

  Carriers

46 (52.9)

41 (47.1)

0.92 (0.51–1.66)

0.93 (0.51–1.72)

 Six additional serotypes in PCV13

    

  Non-carriers

74 (54.4)

62 (45.6)

1 (reference)

1 (reference)

  Carriers

21 (52.5)

19 (47.5)

0.93 (0.46–1.88)

0.98 (0.47–2.03)

Subgroup aged 10–14 years

(n = 87)

(n = 120)

  

 Any serotype

  Non-carriers

47 (40.2)

70 (59.8)

1 (reference)

1 (reference)

  Carriers

40 (44.4)

50 (55.6)

1.19 (0.68–2.08)

1.08 (0.61–1.94)

 Serotypes in PCV7

  Non-carriers

47 (38.8)

74 (61.2)

1 (reference)

1 (reference)

  Carriers

40 (46.5)

46 (53.5)

1.37 (0.78–2.40)

1.22 (0.68–2.20)

 Six additional serotypes in PCV13

  Non-carriers

76 (43.7)

98 (56.3)

1 (reference)

1 (reference)

  Carriers

11 (33.3)

22 (66.7)

0.65 (0.29–1.41)

0.54 (0.23–1.26)

  1. 95 % CI 95 % confidence interval; OR odds ratio; PCV7 7-valent pneumococcal conjugate vaccine; PCV13 13-valent pneumococcal conjugate vaccine
  2. aORs adjusted for age (as a continuous term), gender, ethnicity, number of siblings, and parental smoking