Table 1.
Baseline characteristics stratified by TST results
| Characteristic | Positive TST, 5 mm | Negative TST, 5 mm | P value | Positive TST, 10 mm | Negative TST, 10 mm | P value |
|---|---|---|---|---|---|---|
| n = 62 | n = 421 | n = 45 | n = 438 | |||
| Age (years) | 61.2 ± 14.4 | 62.5 ± 16.6 | 0.57 | 63.7 ± 13.6 | 62.2 ± 16.6 | 0.57 |
| Race | <0.01 | <0.01 | ||||
| White | 28.6 % | 64.1 % | 28.6 % | 62.8 % | ||
| Non-white | 71.4 % | 35.9 % | 71.4 % | 37.2 % | ||
| BCG | 0.1 | 0.15 | ||||
| Vaccinated | 33.9 % | 25.4 % | 35.6 % | 25.6 % | ||
| Not vaccinated | 33.9 % | 48.5 % | 33.3 % | 48.0 % | ||
| Unknown | 32.3 % | 26.1 % | 31.1 % | 26.5 % | ||
| Chest radiograph | 0.82 | 0.57 | ||||
| Suggestive of TB | 22.6 % | 20.7 % | 26.7 % | 20.3 % | ||
| Not suggestive of TB | 72.6 % | 75.8 % | 68.9 % | 76.0 % | ||
| Not performed | 4.8 % | 3.6 % | 4.4 % | 3.7 % | ||
| Dialysis Center (HD only) | 0.18 | 0.11 | ||||
| HSC | 58.0 % | 43.9 % | 44.0 % | 61.5 % | ||
| SOGH | 18.0 % | 25.2 % | 25.2 % | 15.4 % | ||
| SBGH | 24.0 % | 30.9 % | 30.8 % | 23.0 % | ||
| Peritoneal dialysis | 19.4 % | 21.1 % | 0.75 | 13.3 % | 21.7 % | 0.19 |
| Clinical diagnosis of LTBI (TB Registry) | 16.1 % | 1.2 % | <0.01 | 20.0 % | 1.4 % | <0.01 |
Age presented as mean ± standard deviation, categorical variables presented as percentages
TST tuberculin skin test, BCG Bacillus Calmette-Guérin, TB tuberculosis, HSC Health Sciences Centre, SOGH Seven Oaks General Hospital, SBGH Saint Boniface General Hospital, LTBI latent tuberculosis infection