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Table 2 Univariate and multivariate analysis of risk factors for unfavourable treatment outcomes among MDR-TB patients

From: Treatment quality and outcome for multidrug-resistant tuberculosis patients in four regions of China: a cohort study

Factors

Treatment outcomes at the last follow-up

Odds ratio (95% CI)

Adjusted odds ratio (95% CI) a

Favourable outcomes (n = 20)

Unfavourable outcomes (n = 36)

Age (mean±SD)

40.8 ± 16.8

49.1 ± 16.9

0.97 (0.94–1.00)

 

Male

16 (80.0)

31 (86.1)

0.65 (0.15–2.74)

 

Study sites in

 Western

13 (65.0)

27 (75.0)

1

 

 Eastern

7 (35.0)

9 (25.0)

1.62 (0.49–5.30)

 

Body mass index (mean±SD)

20.9 ± 2.0

20.0 ± 2.4

1.22 (0.94–1.58)

1.31 (0.99–1.75)

Education

 Primary school or below

9 (45.0)

28 (77.8)

1

1

 Junior high school or above

11 (55.0)

8 (22.2)

4.28 (1.31–13.9)

3.60 (1.04–12.5)

Married

13 (65.0)

17 (47.2)

2.08 (0.67–6.41)

1.66 (0.50–5.55)

Health insurance

19 (95.0)

30 (83.3)

3.80 (0.42–34.1)

4.54 (0.49–42.0)

Haemoptysis

4 (20.0)

11 (30.6)

0.57 (0.15–2.10)

0.59 (0.15–2.29)

Tuberculosis treatment history

6 (30.0)

18 (50.0)

0.43 (0.13–1.36)

0.43 (0.13–1.49)

Pulmonary cavities

12 (60.0)

15 (41.7)

2.10 (0.69–6.39)

1.92 (0.52–7.12)

DST pattern

 MDR

12 (60.0)

18 (50.0)

1

1

 Pre-XDR and XDR

8 (40.0)

18 (50.0)

0.67 (0.22–2.02)

0.87 (0.27–2.84)

Strain family (n = 50)

 Non-Beijing family

2 (10.5)

4 (12.9)

1

1

 Beijing family

17 (89.5)

27 (87.1)

1.26 (0.21–7.64)

1.58 (0.24–10.4)

Treatment regimen

 Non-MDR-TB treatment

13 (65.0)

24 (66.7)

1

1

 MDR-TB treatment

7 (35.0)

12 (33.3)

1.08 (0.34–3.40)

0.52 (0.13–2.10)

MDR-TB diagnosis delay (days)

  ≤ 90.0

13 (65.0)

18 (50.0)

1

1

  > 90.0

7 (35.0)

18 (50.0)

0.54 (0.17–1.66)

0.44 (0.12–1.55)

  1. DNA was failure to extract from six Mycobacterium tuberculosis isolates. Two patients were once reported as treatment success but were lost at the last yearly follow-up, thus excluded from the analysis. MDR Multidrug-resistant, SD Standard deviation, DST Drug susceptibility testing, XDR Extensively drug-resistant
  2. aAdjusted by age, gender and study sites