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Table 1 Characteristics of patients from National Capital District and Daru cohorts

From: Evolution and spread of a highly drug resistant strain of Mycobacterium tuberculosis in Papua New Guinea

Characteristic

NCD (n = 66)

Daru (n = 100)

p value

Lineage

 L2 (Beijing 2.2.1.1)

57 (86%)

95 (95%)

0.084

 L4 (Euro-American mainly 4.8)

9 (14%)

5 (5%)

Age

 < 18

6 (9%)

16 (16%)

0.246

 ≥ 18

58 (88%)

82 (82%)

 Unknown

2 (3%)

2 (2%)

 

 Median (IQR)

33 (25–38)

29 (20–35)

 

Gender

 Male

30 (48%)

48 (48%)

0.754

 Female

36 (52%)

52 (52%)

Sputum smear

 Positive

17 (26%)

80 (80%)

0.981

 Negative

4 (3%)

20 (20%)

 Unknown (Inc. Isolates)

45 (68%)

0

 

Type of TB

 Pulmonary*

63 (95%)

99 (99%)

0.302

 Extrapulmonary

3 (5%)

1 (1%)

Genomic cluster**

 Yes

53 (66%)

87 (87%)

0.278

 No

13 (34%)

13 (13%)

Phenotypic resistance to first-line drugs

 HR

17 (26%)

0

-

 HRE

5 (8%)

0

 HRS

14 (21%)

24 (24%)

 HRZ

3 (5%)

0

 HRES

7 (11%)

5 (5%)

 HRSZ

3 (5%)

6 (6%)

 HREZ

3 (5%)

0

 HRESZ

14 (21%)

50 (50%)

 Nil

0

15 (15%)

  1. NCD National Capital District, IQR inter-quartile range, TB tuberculosis; H Isoniazid, R Rifampicin, E Ethambutol, S Streptomycin, Z Pyrazinamide
  2. *Predominantly sputum samples; extrapulmonary samples rarely collected
  3. **Genomic cluster—determined from transmission cluster analysis with pairwise SNP difference of 10 between isolates