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Table 2 Distribution of QuantiFERON-TB Gold In tube test results in non-smokers and smokers respectively in Danish and Tanzanian TB patients

From: Negative effect of smoking on the performance of the QuantiFERON TB gold in tube test

 

Danish patients (n = 34)

Tanzanian patients (n = 172)

 

Non-smokers (n = 14)

Smokers (n = 20)

p

Non-smokers (n = 150)

Smokers (n = 22)

p

Positive, n (%)

12 (86)

10 (50)

0.03

112 (75)

11 (48)

0.01

Negative, n (%)

0 (0)

9 (45)

0.004

16 (11)

6 (26)

0.04

Indeterminate, n (%)

2 (14)

1 (5)

0.56

21 (14)

6 (26)

0.14

  1. Distribution of QFT and IP-10 results for non-smokers and smokers respectively compared by chi square test. Each outcome was tested against the pooled proportion of the other possible outcomes. QFT: QuantiFERON-TB Gold In tube test.