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Table 1 Demographic and behavioral characteristics of the study participants

From: Tuberculosis contact investigation with a new, specific blood test in a low-incidence population containing a high proportion of BCG-vaccinated persons

Variables

n

Age of contacts (years) – mean (± SD)

28.5 (± 10.5)

Previous BCG vaccination

157 (50.8%)

Origin (Foreign/German)

84 (27.1%)/ 225 (72.9%)

Residence time (weeks) – mean (± SD)

535.4 (± 394)

Exposure time (hours) – mean (± SD)

221 (± 273)

Previous contact tracing; TST results

8; 1 TST-positive

No. of contacts per source – mean (± SD)

20 (± 13)

Foreign places of birth

25