Collection

Serotype (n)

Phenotype^{b}

AMP

CHL

SXT

TET

NAL

OFX

CRO


A (1995  1996)

sonnei (24)

R

11

8

23

23

0

0

0

 
S

13

16

1

1

24

24

24


flexneri (56)

R

54

10

53

53

9

0

0

 
S

2

46

3

3

47

56

56

p Value^{a}
  
< 0.0001

0.1287

0.8102

0.8102

0.0371





B (2000  2002)

sonnei (54)

R

50

10

53

52

9

0

1

 
S

4

44

1

2

45

54

53


flexneri (50)

R

46

38

44

49

21

0

0

 
S

4

12

6

1

29

50

50

p Value^{a}
  
0.9316

< 0.0001

0.0415

0.5577

0.0052



0.329

C (2007  2008)

sonnei (71)

R

17

5

71

69

51

0

12

 
S

54

66

0

2

20

71

59


flexneri (30)

R

25

28

28

30

19

1

1

 
S

5

2

2

0

11

29

29

p Value^{a}
  
< 0.0001

< 0.0001

< 0.0001

0.3696

0.4619

0.297

0.076

Combined

sonnei (148)

R

78

23

147

144

60

0

13

 
S

70

125

1

4

88

148

135


flexneri (136)

R

125

76

125

132

49

1

1

 
S

11

60

11

4

87

135

135

p Value^{a}
  
< 0.0001

< 0.0001

0.001

0.613

0.365

0.478

0.002


^{a}
p Value calculated using the chisquared test

^{b} Phenotype with respect to Resistant (R) or Sensitive (S)
 AMP; Ampicillin, CHL; Chloramphenicol, SXT; Trimethoprim Sulfamethoxazole, TET; Tetracycline, NAL; Nalidixic Acid, OFX; Ofloxacin, CRO; Ceftriaxone.