Characteristics of the PREDICT participants included and not included in the data analysis (N=9870)
| Characteristic | Included (N=9176) | Not included (N=694) | P value* | ||
| Number | Percentage | Number | Percentage | ||
| Latent tuberculosis infection (N=9176) | |||||
| Positive | 2536 | 27.6 | |||
| Area deprivation (N=9408) | |||||
| Most deprived | 4914 | 56.2 | 335 | 51.0 | |
| Moderately deprived | 3355 | 38.3 | 278 | 42.3 | |
| Least deprived | 482 | 5.5 | 44 | 6.7 | 0.031 |
| Ever smoked (N=9802) | |||||
| Yes | 1735 | 19.0 | 119 | 17.6 | 0.377 |
| History of substance misuse (N=9807) | |||||
| Yes | 193 | 2.1 | 11 | 1.6 | 0.401 |
| Ever been homeless (N=9814) | |||||
| Yes | 179 | 2.0 | 12 | 1.8 | 0.743 |
| Ever been in prison (N=9808) | |||||
| Yes | 126 | 1.4 | 12 | 1.8 | 0.394 |
| Gender (N=9797) | |||||
| Female | 4558 | 50.0 | 367 | 53.9 | 0.050 |
| Age (N=9848) | |||||
| ≤35 years | 5404 | 59.0 | 382 | 55.8 | |
| >35 years | 3759 | 41.0 | 303 | 44.2 | 0.100 |
| Place of birth (N=9820) | |||||
| Non-UK | 7667 | 83.9 | 564 | 82.5 | |
| UK | 1469 | 16.1 | 120 | 17.5 | 0.316 |
| Ethnicity (N=9618) | |||||
| Asian | 5332 | 59.7 | 402 | 59.1 | |
| White | 1113 | 12.5 | 84 | 12.4 | |
| Black | 1310 | 14.7 | 121 | 17.8 | |
| Mixed/other | 1183 | 13.2 | 73 | 10.7 | 0.065 |
| HIV status(self-reported)(N=9183) | |||||
| Positive | 52 | 0.6 | 3 | 0.5 | 0.650 |
| BCG vaccination (N=8312) | |||||
| Yes | 6346 | 81.8 | 450 | 81.7 | 0.954 |
| Recent TB contact (N=9768) | |||||
| Yes | 4605 | 50.7 | 412 | 59.8 | <0.001 |
Percentages may not add to 100 due to rounding.
*Χ2 test p value.
PREDICT, Prognostic Evaluation of Diagnostic Interferon-Gamma Release Assays Consortium; TB, tuberculosis.