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. 2012 Dec 15;12:352. doi: 10.1186/1471-2334-12-352

Table 1.

TB positivity as detected by LED microscopy among different socio-demographic factors of prison inmates in North Gondar Zone Prison, using logistic and multivariable logistic regression analysis, N = 250

Variables No. tested (%) No. positive (%) No. negative (%) Crude OR 95%CI Adjusted OR 95%CI
Age (in years)
 
 
 
 
 
0.792
0.537-1.170
0-20
31(12.4)
2(6.5)
29(93.5)
0.906
0.076-10.788
 
 
21-30
108(43.2)
15(13.9)
93(86.1)
0.388
0.48-3.141
 
 
31-40
51(20.4)
6(11.8)
45(88.2)
0.469
0.52-4.199
 
 
41-50
31(12.4)
2(6.5)
29(93.5)
0.906
0.076-10.788
 
 
>50
29(11.6)
1(3.4)
28(96.6)
Ref
 
 
 
Educational status
 
 
 
 
 
1.247
0.643-2.417
Uneducated
132(52.8)
15(11.4)
117(88.6)
-
-
 
 
primary education
94(37.6)
7(7.4)
87(92.6)
-
-
 
 
secondary education
22(8.8)
4(18.2)
18(81.8)
-
-
 
 
Tertiary education
2(0.8)
0(0)
2(100)
 
 
 
 
Length of stay in the prisons (in months)
 
 
 
 
 
0.651
0.405-1.047
<2
18(7.2)
1(5.6)
17(94.4)
1.382
0.166-11.483
 
 
2-6
60(24)
11(18.3)
49(81.7)
0.362
0.145-0.907
 
 
6-12
39(15.6)
4(10.3)
35(89.7)
0.711
0.210-2.407
 
 
>12
133(53.2)
10(7.5)
123(92.5)
Ref
 
 
 
Number of prisoners per cell
 
 
 
 
 
1.249
0.802-1.946
1-100
24(9.6)
0(0)
24(100)
2.454
-
101-200
6(2.4)
1(16.7)
6(83.3)
0759
0.082-7.072
 
 
201-300
61(24.4)
8(13.1)
53(86.9)
1.006
0.385-2.628
 
 
301-400
68(27.2)
5(7.4)
63(92.6)
1.914
0.641-5.718
 
 
401-500 91(36.4) 12(13.2) 79(86.8) Ref      

TB = tuberculosis; OR = odds ratio; CI = confidence interval; LED = light emitting diode; Ref = reference variable.