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Table 2 TB positivity as detected by LED microscopy among different clinical factors of prison inmates in North Gondar Zone Prison, using logistic and multivariable regression analysis, N = 250

From: Prevalence of smear positive pulmonary tuberculosis among prisoners in North Gondar Zone Prison, northwest Ethiopia

Variables No. tested (%) No. positive (%) No. negative (%) Crude OR 95%CI Adjusted OR 95%CI
Duration of Cough       1.471 0.946-2.286
1 week 17(6.8) 1(5.9) 16(94.1) 0.444 0.283-17.749   
2 weeks 14(5.6) 0(0) 14(100) 0.999 -   
3 weeks 4(1.6) 0(0) 4(100) 0.999 -   
4 weeks 19(7.6) 2(10.5) 17(89.5) 0.823 0.258-5.509   
8 weeks 17(6.8) 1(5.9) 16(94.1) 0.444 0.283-17.749   
>8 weeks 179(71.6) 22(12.3) 157(87.7)     
Time of occurrence of the cough       1.332 0.416-4.262
Before imprisonment 51(20.4) 6(23.1) 45(20.1) 0.838 0.318-2.209   
After imprisonment 199(79.6) 20(76.9) 179(79.9)     
Nutritional status       0.383 0.154-0.954
Under nutrition (BMI < 18.5kg/m2) 69(27.6) 12(17.4) 57(82.6) 0.398 0.174-0.911   
Normal nutrition (BMI > 18.5kg/m2) 181(72.4) 14(7.7) 167(92.3)     
History of previous treatment       0.469 0.128-1.726
Yes 27(10.8) 5(18.5) 22(81.5) 0.457 0.157-1.334   
No 223(89.2) 21(9.4) 202(91.6)     
HIV status of the inmates       0.082 0.026-0.258
Positive 19(7.6) 9(47.4) 10(52.6) 0.088 0.032-0.247   
Negative 231(92.4) 17(7.4) 214(92.6)     
  1. BMI = body mass index; TB = tuberculosis; OR = odds ratio; CI = confidence interval; LED = light emitting diode.