Table 7: Comparison of antimicrobial resistant patterns of Gram-negative isolates among inpatients and outpatients attending the University of Gondar Referral Hospital from March to May, 2014.

AntimicrobialsPatternBacterial isolates value
Inpatient () Outpatients ()

Tetracycline S 13 (21.3) 8 (50) 5.2 0.02
R 48 (78.7) 8 (50)
Chloramphenicol S 25 (41) 10 (62.5) 2.3 0.12
R 36 (59) 6 (37.5)
Ceftriaxone S 28 (45.9) 15 (93.8) 11.7 0.000
R 33 (54.1) 1 (6.2)
Ampicillin S 1 (1.6) 2 (12.5) 3.9 0.04
R 60 (98.4) 14 (87.5)
Amoxicillin S 2 (3.3) 0 (0) 0.5 0.4
R 59 (96.7) 16 (100)
Gentamycin S 28 (45.9) 13 (31.7) 6.3 0.012
R 33 (54.1) 3 (18.7)
Ciprofloxacin S 36 (59) 13 (81.2) 2.7 0.1
R 25 (41) 3 (18.8)
Trimethoprim-sulfamethoxazole S 15 (24.6) 11 (68.8) 11 0.001
R 46 (75.4) 5 (31.2)

S = sensitive, R = resistance, and = number of isolates.