Variables | Category | TB screening negative for TB | New TB cases | Hazard Ratio (95% CI) | Adjusted Hazard Ratio (95% CI) | p-value†|
---|---|---|---|---|---|---|
N = 1064 | N = 60 | |||||
NL ratio | per unit | 1.66 (1.14–2.54) | 2.63 (1.68–4.53) | 1.13 (1.08–1.18) | 1.06 (1.00–1.13) | 0.069 |
Age (years) | Under 30 | 217 | 14 (6.5%) | 1.02 (0.54–1.93) | 1.30 (0.68–2.48) | 0.391 |
30–39 | 482 | 30 (6.2%) | reference | reference | ||
Over 40 | 365 | 16 (4.4%) | 0.68 (0.37–1.25) | 0.77 (0.41–1.45) | ||
Sex | Male | 473 | 37 (7.8%) | 2.06 (1.22–3.46) | 1.76 (1.02–3.05) | 0.039 |
Female | 587 | 23 (3.9%) | reference | reference | ||
Missing data | 4 | 0 | – | |||
Ethnicity | Thai | 748 | 40 (5.4%) | reference | reference | 0.281 |
Hill tribe | 198 | 15 (7.6%) | 1.36 (0.75–2.46) | 1.29 (0.69–2.42) | ||
Others | 118 | 5 (4.2%) | 0.80 (0.32–2.04) | 0.59 (0.22–1.54) | ||
Year of DCC registration | 2002–2006 | 467 | 28 (6.0%) | reference | reference | 0.259 |
2007–2011 | 477 | 27 (5.7%) | 0.87 (0.51–1.47) | 0.78 (0.44–1.39) | ||
2012–2015 | 120 | 5 (4.2%) | 0.64 (0.25–1.65) | 0.45 (0.16–1.25) | ||
CD4 counts (cells/mm3) | < 50 | 242 | 25 (10.3%) | 7.53 (3.61–15.71) | 4.20 (1.75–10.08) | < 0.001 |
50–199 | 269 | 25 (9.3%) | 5.78 (2.77–12.03) | 4.36 (2.00–9.50) | ||
≧200 | 553 | 10 (1.8%) | reference | reference | ||
ART | No | 592 | 40 (6.8%) | reference | reference | 0.357 |
Past/Current | 330 | 12 (3.6%) | 0.49 (0.25–0.92) | 0.71 (0.35–1.44) | ||
Start during follow-up | 123 | 7 (5.7%) | 0.83 (0.38–1.86) | 0.51 (0.21–1.20) | ||
Missing data | 19 | 1 (5.3%) | 0.69 (0.09–5.01) | 1.53 (0.20–11.78) | ||
TST (Positive: > 5 mm) | Negative | 945 | 51(5.4%) | reference | reference | 0.019 |
Positive | 79 | 8 (10.1%) | 1.88 (0.89–3.96) | 3.52 (1.58–7.84) | ||
Not tested | 40 | 1 (2.5%) | 0.54 (0.07–3.88) | 0.55 (0.08–4.05) | ||
Abnormal X ray | No | 808 | 42 (5.2%) | reference | reference | 0.800 |
Yes | 250 | 18 (7.2%) | 1.47 (0.85–2.56) | 1.08 (0.61–1.90) | ||
No tested | 6 | 0 | – | – | ||
TB symptomsb | No | 680 | 17 (2.5%) | reference | reference | < 0.001 |
At least one symptom | 384 | 43 (11.2%) | 5.19 (2.96–9.11) | 3.14 (1.70–5.79) |