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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

From: Prevalence and antimicrobial susceptibility pattern of methicillin resistant Staphylococcus aureus isolated from clinical samples at Yekatit 12 Hospital Medical College, Addis Ababa, Ethiopia

Antibiotics MRSA (n = 34) MSSA (n = 160) AOR 95 % CI P-value
N (%) N (%)
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
Vancomycina 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 - -
  1. AMC Amoxilin- clavulanic acid, SXT Trimethoprim-Sulfamethoxazole
  2. a concentration from 2 μg/ml to16μg/ml
  3. ** Significant at P value < 0.01, * Significant at P value < 0.05