Table 6 Association of methicillin resistant and sensitive S. aureus to different antimicrobial classes at Yekatit 12 Hospital Medical College from September 2013 to April 2014, Addis Ababa, Ethiopia

AMC [30 μg]

34(100)

2(1.3)

9.809

(1.56, 61.69)

0.015^*

Penicillin G [10 U]

34(100)

153(95.6)

0.000

-

0.99

Vancomycin^a

10(29.4)

0(0)

0.000

-

0.99

SXT [1.25/23.75 μg]

34(100)

69(43.1)

16.24

(0.41, 63.28)

0.135

Chloramphenicol [30 μg]

16(47)

20(12.5)

1.130

(0.09, 13.63)

0.923

Gentamycin [10 μg]

13(38.2)

13(8.1)

0.896

(0.07, 10.98)

0.931

Cefuroxime [30 μg]

34(100)

6(3.8)

216.17

(10.8, 432.2)

0.001^**

Clindamycin [30 μg]

18(53)

5(3.1)

13.22

(1.99, 87.62)

0.007^**

Ciprofloxacin [5 μg]

28(82.5)

33(20.6)

0.615

(0.10, 3.73)

0.598

Erythromycin [15 μg]

34(100)

69(43.1)

9.044

(0.49, 16.05)

0.136

Cephalothin [10 μg]

34(100)

3(1.8)

1

-

-