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Table 5 Predictors of treatment interruption (compared to cures) (n = 457) †

From: Predictors of pulmonary tuberculosis treatment outcomes in South Korea: a prospective cohort study, 2005-2012

Variable

Univariate

Multivariate‡

  

OR

95% CI

OR

95% CI

Gender

Female

1

 

1

 
 

Male

1.48

0.79-2.78

1.53

0.78-3.00

Age

20-34

1

 

1

 
 

35-49

1.16

0.69-1.95

0.92

0.53-1.59

 

≥50

0.67

0.38-1.18

0.63

0.34-1.16

Body Mass Index (n = 446)

<18.5

1

 

-

 
 

≥18.5

0.78

0.51-1.91

  

Diabetes

No

1

 

-

 
 

Yes

1.56

0.95-2.56

  

Alcohol, within 6 months

Less than once a week

1

 

-

 
 

Several times a week

1.71

0.96-3.05

  
 

At least once a day

2.03**

1.27-3.24

  

Smoking, within 6 months

Never smoked

1

 

-

 
 

< 1 pack/day

2.68**

1.31-5.49

  
 

1 pack/day

3.36***

1.75-6.46

  
 

> 1 pack/day

3.12**

1.54-6.32

  

Residence

Small city and town

1

 

-

 
 

Large city

1.20

0.79-1.83

  

Education

High school, above

1

 

-

 
 

Middle school, below or refusal

1.20

0.80-1.82

  

Occupation

Unemployment and others

1

 

1

 
 

Health care, professional and office work

1.14

0.47-2.75

0.89

0.35-2.25

 

Service sector and laborer

2.39**

1.45-3.95

2.30**

1.36-3.90

Chest X-ray

     

Grade

Minimal or moderate

1

 

-

 
 

Far advanced

1.34

0.89-2.04

  

Cavity

No

1

 

-

 
 

Yes or not clear

1.04

0.63-1.69

  

Nodular lesion

No

1

 

-

 
 

Yes or not clear

2.07

0.70-6.14

  

Bilateral

Unilateral

1

 

1

 
 

Bilateral

2.86**

1.46-5.60

2.46*

1.22-4.95

Number of previous treatment episode

0 (new case)

1

 

-

 
 

1

1.54

0.87-2.71

  
 

2

2.77**

1.53-5.02

  
 

≥3

2.40**

1.35-4.27

  

History of failure

No

1

 

1

 
 

Yes

1.81*

1.12-2.92

1.76*

1.04-2.98

History of TI

No

1

 

1

 
 

Yes

2.72***

1.77-4.18

2.35***

1.49-3.70

Elevation of total bilirubin

No

1

   
 

Yes

0.63*

0.40-1.00

  

Elevation of liver enzyme

No

1

   
 

Yes

0.95

0.55-1.65

  

Number of significant regimen changes

0

1

 

-

 
 

≥1

1.62*

1.04-2.55

  

Drug susceptibility pattern (n = 403)

DS

1

 

-

 
 

Mono/poly-R

1.25

0.66-2.39

  
 

Rif, mono-R

2.01

0.68-5.92

  
 

MDR

1.45

0.88-2.39

  
  1. *p <0.05, **p <0.01, ***p < 0.001.
  2. †Treatment interruption (n = 122) was compared with cured (n = 335).
  3. ‡Multivariate model includes age, gender and all significant factors from the univariate model.
  4. TI: Treatment interruption, DS: Drug susceptible, Mono/poly-R: mono or poly-drug resistance that is not matched with the definition of multidrug-resistant tuberculosis or rifampin mono resistance; MDR: multidrug-resistant tuberculosis.