Variables | TST | p-value | |
---|---|---|---|
n (%), 95% CI | |||
Gender | Male | 3/279 (1.1), -0.001 – 0.023 | 0.75 |
Female | 7/454 (1.5), 0.004 – 0.026 | ||
Nationality | Italian | 6/692 (0.9), 0.002 – 0.016 | 0.001 |
Migrant | 4/41 (9.8), 0.007 – 0.189 | ||
TB incidence of the country of birth* | ≥20 cases per 100,000 population | 4/12 (33.3), 0.066 – 0.600 | <0.0001 |
<20 cases per 100,000 population | 6/721 (0.8), 0.002 – 0.015 | ||
Potential professional exposure calculated without the interference of subjects coming from countries at high-incidence of TB | Pre-clinical students | 3/136 (2.2), -0.003 – 0.046 | 0.09 |
Clinical students | 3/585 (0.5), -0.001 – 0.011 | ||
BCG immunization | Not vaccinated | 9/720 (1.3), 0.005 – 0.021 | 0.17 |
Vaccinated | 1/13 (7.7), -0.068 – 0.222 |