Table 3

Difference in sensitivity pattern of frequently isolated Gram negative rods during two halves of study period.

(a)












Enterobacteriaceae
Pseudomonas. aeruginosa




Period 1
Period II

Period I
Period II









n = 55
%
n = 212
%
P-value
n = 15
%
n = 34
%
P-value

Amikacin
6
10.9
35
16.5
0.305
0
0
4
11.8
0.298 #
Amox/clav
25
45.5
102
48.1
0.725
NT
NT
NT
NT
-
Ceftriaxone
13
23.6
118
55.7
< 0001*
NT
NT
NT
NT
-
Ciprofloxacin
15
27.3
105
49.5
0.003 *
2
13.3
10
29.4
0.298 #
Tazocin
0
0
24
11.3
0.006 *
0
0
4
11.8
0.298 #
Imipenem
0
0
0
0
-
0
0
2
5.9
0.999 #
Ceftazidime
NT
NT
NT
NT
-
1
6.7
2
5.9
0.999 #


(b)












Pseudomonas species
Acinetobactor


Period 1
Period II

Period 1
Period II









n = 8
%
n = 29
%
p-value
n = 6
%
n = 52
%
p-value

Amikacin
4
50.0
12
41.4
0.705 #
1
16.7
27
51.9
0.195 #
Amox/clavilunate
NT
NT
NT
NT
-
NT
NT
NT
NT
-
Ceftriaxone
0
0
7
24.1
0.308 #
0
0
39
75.0
0.001 #*
Ciprofloxacin
1
12.5
7
24.1
0.655 #
0
0
33
63.5
0.004 #*
Pipracillin/Tazobactam
0
0
2
6.9
0.999 #
0
0
34
65.4
0.003 #*
Imipenem
0
0
6
20.7
0.305 #
0
0
34
65.4
0.003 #*
Ceftazidime
NT
NT
NT
NT
-
NT
NT
NT
NT
-

p-values calculated by Chi square test otherwise indicated

# p-value calculated by Fisher exact test

* p < 0.05

Irfan et al. BMC Infectious Diseases 2008 8:80   doi:10.1186/1471-2334-8-80