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. 2013 Jun 4;12:11. doi: 10.1186/1476-0711-12-11

Table 7.

Analysis of epidemiologic risk factors for S. aureus and MRSA nasal carriage among prisoners, Jimma town, 2011

Risk factors Staphylococcus N=50
P Methicilin-resistant S. aureus n=25
p
S.aureus CNS Positive Negative
Age
18-25
No.
20
9
0.005
9
11
0.787
%
80.0
36.0
75.0
84.6
26-35
No.
2
9
1
1
%
8.0
36.0
8.3
7.7
36-45
No.
3
7
2
1
%
12.0
28.0
16.7
7.7
Sex
Male
No.
25
25
-
12
13
-
%
100
100
100
100
Previous hospitalization in the past 1 year
Present
No.
5
2
0.417
2
3
1.00
%
20
8
16.7
23.1
Absent
No.
20
23
10
10
%
80.
92
83.3
76.9
Antibiotic usage in the past 4 weeks
Present
No.
7
6
0.5
6
1
0.030
%
28
24
50
7.7
Absent
No.
18
19
6
12
%
72
76
50
92.3
Extent of usage of subscribed antibiotics
Completed
No.
5
6
0.209
4
1
1.00
%
62.5
100
66.7
50
Not-Completed
No.
3
-
2
1
%
37.5
-
33.3
50
Having respiratory infection at time of study
Present
No.
11
13
0.778
9
2
0.005
%
44
52
75
15.4
Absent
No.
14
12
3
11
%
56
48
25
84.6
Number of prisoners in dormitory/room
1-20
No.
1
3
0.048
-
1
0.034
%
4
12
-
7.7
21-40
No.
1
6
-
1
%
4
24
-
7.7
41-60
No.
4
6
-
4
%
16
24
-
30.8
>60
No.
19
10
12
7
%
76
40
100
53.8
Presence of hospital admitted patients in prisoner room(in the last 1yr) Present
No.
8
12
0.387 5
3
0.411
%
32
48
41.7
23.1
Absent
No.
17
13
7
10
  % 68 52 58.3 76.9

N= total number of nasal swabs taken from prisoners, n= total number of Methicillin-Resistant S. aureus isolates from prisoners.

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