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Table 2 Distribution of Streptococcus pneumoniae antimicrobial non-susceptibility among age groups

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

Age groups in months

Non-susceptibility (ns) or resistance (r) to antibiotics, n (%)

MDR, n (%)

Penicillin (ns)

Erythromycin (ns)

Clindamycin (r)

TMP-SMX (ns)

0–23a (n = 92)

18 (19.6)

21 (22.8)

19 (20.7)

25 (27.2)

14 (15.2)

24–47 (n = 199)

27 (13.6)

40 (20.1)

31 (15.6)

53 (26.6)

23 (11.6)

P value

0.186

0.593

0.283

0.923

0.382

48–71 (n = 76)

13 (17.1)

17 (22.4)

12 (15.8)

22 (28.9)

9 (11.8)

P value

0.683

0.944

0.422

0.799

0.529

Total

58 (15.8)

78 (21.3)

62 (16.9)

100 (27.3)

46 (12.5)

  1. TMP-SMX trimethoprim–sulphamethoxazole, MDR multidrug resistance
  2. aReference group for each comparison (chi-squared test)