Table 1.
The characteristics of the study population according to the presence of BCG scar.
| Variables | BCG scar (+) (n=156) | BCG scar (-) (n=44) | p-value |
|---|---|---|---|
| Age, years, median (IQR) | 35.50 (29.25-50.00) | 56.50 (31.50-68.75) | <0.01 |
| Women (%) | 79/156 (50.6%) | 24/44 (54.5%) | 0.65 |
| Diameter of BCG scar, mm, median (IQR) | 12 (10-17) | 0 (0-0) | <0.01 |
| Chest radiographs | 0.76 | ||
| Stable TB scar on chest x-ray | 11/156 (7.1%) | 3/44 (6.8%) | |
| No stable TB scar on chest x-ray | 101/156 (64.7%) | 31/44 (70.5%) | |
| No chest x-ray | 44/156 (28.2%) | 10/44 (22.7%) | |
| Atopy* | 0.18 | ||
| Non-atopic | 53/156 (34.0%) | 21/44 (47.7%) | |
| Intermediate | 19/156 (12.2%) | 6/44 (13.6%) | |
| Atopic | 84/156 (53.8%) | 17/44 (38.6%) | |
| Asthma** | 26/135 (19.3%) | 14/40 (35.0%) | 0.04 |
| Positive bronchodilator response | 15/90 (16.7%) | 9/31 (29.0%) | 0.14 |
| Positive provocation testing | 15/106 (14.2%) | 6/22 (27.3%) | 0.13 |
IQR, interquartile range; BCG, bacillus Calmette-Guérin; TB, tuberculosis; Data are presented as n (%) unless otherwise stated.
* Atopy is defined as positive skin prick test. Inhalant allegens for skin prick test include Dermatophagoides farinae, Dermatophagoides pteronyssinus, Hay dust, Alder, Hazel, birch, Oak, Beech, Plane tree, Poplar, Elm, Willow tree, Acacia, Ash, Elder, Rye grass, Orchard grass, Timothy grass, Ragweed, Mugwort, Hop Japanese, Meadow fescue, Dandelion, Penicillium, Mucor, Aspergillus, Alternaria, Cladosporium, Candida, Rhizopus, Cockroach, Cat, Dog, Rat, Rabbit, Sheep's wool, Cow and Latex.
** Asthma is defined as either positive bronchodilator response or positive provocation testing