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Table 1 Mask-Xpert and sputum-Xpert results, by patient and diagnostic characteristics

From: Face mask sampling (FMS) for tuberculosis shows lower diagnostic sensitivity than sputum sampling in Guinea

  

Sputum positive

n = 54 (36.5)

Sputum negative

n = 94 (63.5)

  

Mask positive

Mask negative

Mask positive

Mask

negative

 

N (%)

N (%)

N (%)

N (%)

N (%)

Total

148 (100.0)

26  (48.1)

28 (51.9)

4 (4.3)

90 (95.7)

HIV status

Tested

143 (96.6)

26 (100.0)

26 (92.9)

4 (100.0)

87 (96.7)

Positive

16 (11.1)

6 (23.0)

4 (15.3

1 (25.0)

5 (5.7)

TB Type

New presumptive TB patient

135 (91.2)

25 (96.1)

26 (92.9)

4 (100.0)

80 (88.9)

Prev. Tr*

13 (8.8)

1 (3.9)

2 (7.1)

0 (0.0)

10 (11.1)

TB Cont**

Yes

10 (6.8)

0 (0.0)

2 (7.1)

0 (0.0)

8 (8.9)

No

138 (93.2)

26 (100.0)

26 (92.9)

4 (100.0)

82 (91.1)

SSM

Negative

101 (68.2)

1 (3.8)

6 (21.4)

4 (100.0)

90 (100.0)

Positive

47 (31.8)

26 (100.0)

22 (78.6)

0 (0.0)

0 (0.0)

Xpert

Classic

78 (52.7)

9 (34.6)

18 (64.3)

0 (0.0)

51 (56.7)

Ultra

70 (47.3)

17 (65.4)

10 (35.7)

4 (100.0)

39 (43.3)

  1. *Previously treated, ** contact of known tuberculosis patient; N = number of samples; SSM = sputum smear microscopy; TB = tuberculosis