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. 2016 Feb 25;11(2):e0149453. doi: 10.1371/journal.pone.0149453

Table 2. Bivariate analysis of the socio-demographic and prison related factors for undiagnosed TB outcome among presumptive TB cases in Northern Ethiopian prisons (n = 809).

Variable Presumptive TB cases included in the analysis, n (%) Confirmed undiagnosed TB cases, n (%) Presumptive TB cases without undiagnosed TB, n (%) OR (95% CI) P-value
Age (years)
18–44 655 (81.0) 28 (4.3) 627 (95.7) 1.68 (0.58–4.85) 0.34
≥45 154 (19.0) 4 (2.6) 150 (97.4) Ref.
Educational status
No formal education 209 (25.8) 5 (2.4) 204 (97.6) Ref.
Have formal education 600 (74.2) 27 (4.5) 573 (95.5) 1.92 (0.73–5.05) 0.18
Cigarette smoking (current)
No 638 (78.8) 21 (3.3) 617 (96.7) Ref.
Yes 171 (21.2) 11 (6.4) 160 (93.6) 2.02 (0.95–4.28) 0.06
Chewing Khat* (current)
No 733 (90.7) 24 (3.4) 709 (96.6) Ref.
Yes 76 (9.) 8 (9.3) 68 (90.7) 3.47 (1.51–8.03) 0.004
Sharing a cell with a TB patient
No 620 (76.6) 23 (3.7) 597 (96.3) Ref.
Yes 189 (23.4) 9 (4.8) 180 (95.2) 1.29 (0.59–2.86) 0.52
TB contact history
No 600 (74.2) 18 (3.0) 582 (97.0) Ref.
Yes 209 (25.8) 14 (6.7) 195 (93.3) 2.32 (1.13–4.76) 0.02
Duration of incarceration
<12 months 324 (40.0) 12 (3.7) 312 (96.3) Ref.
≥12 months 485 (60.0) 20 (4.1) 465 (95.9) 1.12 (0.54-.232) 0.76
No of prisoners per cell
≤50 261 (32.2) 8 (3.0) 253 (97.0) Ref.
>50 548 (67.7) 24 (4.4) 524 (95.6) 1.45 (0.64–3.26) 0.37

TB = tuberculosis; OR = Odds ratio; CI = Confidence interval;

* = Catha edulis;

Ref. = Reference