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Table 1 Streptococcus pneumoniae non-suscebtibility in relation to various factors

From: Antibiotic resistance of Streptococcus pneumoniae, isolated from nasopharynx of preschool children with acute respiratory tract infection in Lithuania

Characteristic

Susceptible isolates (n = 208), n (%)

Non-susceptible isolates (n = 159), n (%)

Total (n = 367)

PR (95 % CI)

P value

Age (months)

 0–23b

49 (53.3)

43 (46.7)

92

  

 24–47

117 (58.8)

82 (41.2)

199

0.953 (0.858–1.059)

0.370

 48–71

42 (55.3)

34 (44.7)

76

0.992 (0.874–1.125)

0.895

Sex

 Male

114 (56.4)

88 (43.6)

202

1.006 (0.937–1.081)

0.864

 Femaleb

94 (57.0)

71 (43.0)

165

  

Day care centre attendance

 Attendingb

153 (56.7)

117 (43.3)

270

  

 Non-attending

53 (56.4)

41 (43.6)

94

1.013 (0.912–1.126)

0.808

Season

 Spring

72 (52.9)

64 (47.1)

136

1.181 (1.024–1.363)

0.022

 Summerb

23 (71.9)

9 (28.1)

32

  

 Autumn

78 (59.1)

54 (40.9)

132

1.097 (0.947–1.270)

0.219

 Winter

35 (52.2)

32 (47.8)

67

1.154 (0.990–1.344)

0.067

Cities of Lithuania

 Vilnius

PCC

45 (52.3)

41 (47.7)

86

  

ED

67 (55.4)

54 (44.6)

121

  

Totalb

112 (54.1)

95 (45.9)

207

  

 Kaunas

PCC

31 (59.6)

21 (40.4)

52

0.939 (0.843–1.046)

0.253

 Klaipeda

PCC

17 (70.8)

7 (29.2)

24

0.870 (0.733–1.033)

0.112

 Panevezys

PCC

47 (57.3)

35 (42.7)

82

0.985 (0.891–1.090)

0.774

 Alytusa

PCC

1 (50.0)

1 (50.0)

2

  
  1. PCC primary care centre, ED the emergency department of Children’s Hospital, Affiliate of Vilnius University Hospital Santariskiu Klinikos, Vilnius. PR (95 % CI) - prevalence ratio and 95 % confidence interval of Streptococcus pneumoniae non-susceptibility to one or more antibiotics tested (penicillin, erythromycin, clindamycin, trimethoprim–sulphamethoxazole, norfloxacin and vancomycin), using Multivariable Poisson regression
  2. aNote that Alytus was excluded from this comparison because of the small number of S. pneumoniae isolates (n = 2)
  3. bReference group for each comparison