Table 1: Characteristics of the groups in the study.

Clinical characteristicsParticipants
PatientsHealthy individuals
TB patientsNMLD
patients
Household TB contacts Work TB contacts Controls

Total number of subjects4346414846
Mean age in years (range)48
(21–81)
52
(19–85)
38
(17–70)
44
(29–60)
47
(18–77)
Sex (no. (%) female)19 (44%)31 (67%)21 (51%)45 (93%)30 (65%)
EthnicityCaucasiansCaucasiansCaucasiansCaucasiansCaucasians
BCG vaccination (%)100%100%100%100%100%
Tobacco smoking (no. (%))25 (58%)11 (23%)2 (13%)3 (12%)16 (34%)
Alcohol abuse (no. (%))11 (25%)3 (6%)000
Smear+ and culture+ (%)100%0%ndndnd
IGRA result (no. (%))
 Negative 15 (35%) 40 (86%) 30 (73%) 27 (56%) 40 (87%)
 Positive28 (65%)6 (14%)11 (27%)21 (44%)6 (13%)
TST result (no. (%)) ndndnd
 Negative 19 (44%) 33 (72%)
 Positive24 (56%)13 (28%)

nd: not done.