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Table 11 QFT GIT results in relation to intensity and duration of contact with M. tuberculosis in 222 healthcare workers

From: Prevalence and risk factors for latent tuberculosis in polish healthcare workers: the comparison of tuberculin skin test and interferon-gamma release assay (IGRA) performance

Intensity and duration of contact

QFT ≥0.35 IU/ml No (%)

Sporadic contact

19 (14)

Constant contact

41 (47)

p (Fisher exact test) in relation to the whole tested group

0.0001

1–10 years of employment

8 (13)

11–45 years of employment

52 (33)

p (Fisher exact test) in relation to the whole tested group

0.004