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Table 2 Streptococcus pyogenes isolated from school children in different age groups

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

Age groups

S. pyogenes

Negative culture for S. pyogenes

Total

χ2

P

No.

%

No.

%

No.

%

5–8 years

28

14

175

86

203

25

0.73

0.69

9–12 years

50

13

329

87

379

46.6

> 12 years

26

11

205

89

231

28.4

Total

104

12.8

709

87.2

813

100

  1. χ2 = Chi square ≥ 3.84 is considered statistically significant
  2. P = probability value ≤ 0.05 is considered statistically significant