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Table 1 Beta hemolytic streptococci isolated from students in different age groups

From: Asymptomatic carriage of Streptococcus pyogenes among school children in Sana’a city, Yemen

Age groups Beta-hemolytic streptococci No pathogenic bacteria Total χ2 P
No. % No. % No. %
5–8 years 43 21.2 160 78.8 203 25 1.11 0.58
9–12 years 70 18.5 309 81.5 379 46.6
> 12 years 40 17.3 191 82.7 231 28.4
Mean ± SD 10.5 ± 2.8 years
Total 153 18.8 660 81.2 813 100
  1. SD standard deviation