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 |