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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