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Table 2 Factors associated with sputum smear conversion in East Gojjam zone, Ethiopia, 2019 (n = 268)

From: Sputum smear conversion and associated factors among smear-positive pulmonary tuberculosis patients in East Gojjam Zone, Northwest Ethiopia: a longitudinal study

Variable Response Smear conversion time COR (95% CI) AOR (95% CI)
> 35 days ≤ 35 days
Age in years 15–35 60 (22.4) 67 (25.0) 0.96 (0.59–1.55) 0.68 (0.35–1.42)
> 35 68 (25.4) 73 (27.2) 1 1
Sex Male 75 (28.0) 83 (31.0) 0.97 (0.60–1.58) 1.35 (0.26–2.15)
Female 53 (19.7) 57 (21.3) 1 1
Residence Rural 62 (23.0) 78 (29.0) 0.75 (0.46–1.23) 0.41 (0.15–1.08)
Urban 66 (25.0) 62 (23.0) 1 1
Education level Cannot read and write 45 (17.0) 54 (20.0) 0.86 (0.53–1.42) 1.58 (0.32–2.71)
Can read and write 83 (31.0) 86 (32.0) 1 1
Marital status Single 63 (23.5) 77 (28.7) 0.79 (0.49–1.28) 0.48 (0.23–1.12)
In union 65 (24.3) 63 (23.5) 1 1
Prior TB history Yes 24 (9.0) 30 (11.2) 0.85 (0.46–1.54) 0.52 (0.22–1.29)
No 110 (41.0) 104 (38.8) 1 1
Body mass index ≤ 18 kg/m2 101 (37.7) 87 (32.5) 2.30 (1.32–3.93) 2.01 (1.31–3.85)
> 18 kg/m2 27 (10.1) 53 (19.7) 1 1
Duration of cough ≤ 14 days 28 (10.4) 23 (8.6) 1.42 (0.77–2.63) 0.86 (0.58–2.15)
> 14 days 100 (37.3) 117 (43.7) 1 1
Smear grading < 2+ 68 (25.4) 98 (36.6) 0.49 (0.29–0.81) 0.46 (0.21–0.73)
≥ 2+ 60 (22.4) 42 (15.7) 1 1
HIV status Positive 27 (10.1) 13 (4.8) 2.61 (1.28–5.32) 2.38 (1.20–4.91)
Negative 101 (37.7) 127 (47.4) 1 1
Having DM Yes 31 (11.5) 17 (6.3) 2.31 (1.21–4.42) 2.11 (1.18–4.20)
No 97 (36.2) 123 (46.0) 1 1
Knowledge on TB Good 42 (15.7) 71 (26.5) 0.47 (0.29–0.78) 0.44 (0.23–0.69)
Poor 86 (32.0) 69 (25.8) 1 1
Cigarette smoking Yes 34 (12.7) 20 (7.5) 2.20 (1.25–4.01) 1.96 (1.20–3.82)
No 94 (35.0) 120 (44.8) 1 1
Taking alcohol Yes 34 (12.7) 36 (13.4) 1.05 (0.61–1.81) 0.82 (0.48–1.58)
No 94 (35.1) 104 (38.8) 1 1
Faced stigma Yes 61 (22.7) 41 (15.3) 2.20 (1.33–3.64) 2.0 (1.26–3.52)
No 67 (25.0) 99 (40.0) 1 1
Length of TB service delay < 82 days 54 (20.0) 96 (36.0) 0.33 (0.21–0.55) 0.35 (0.23–0.64)
≥ 82 days 74 (27.6) 44 (16.4) 1 1