Table 4.
Factors associated with Mycobacterium tuberculosis detection in 350 buccal samples.
| Univariate RRa (95% CIb) | p-value | multivariate RR (95% CI) | p-value | ||
|---|---|---|---|---|---|
| Swab collection | OmniSwab (vs EasiCollect) | 1.65 (1.0–2.7) | 0.05 | 1.38 (0.9–2.1) | 0.16 |
| Post-txc sample collection (vs pre-tx) | 1.29 (0.9–1.9) | 0.17 | 1.32 (0.9–1.9) | 0.17 | |
| Disease burden | Positive smear-status | 2.51 (1.6–3.9) | < 0.0001 | 2.05 (1.3–3.2) | 0.001 |
| Cavitary diseased | 4.5 (2.1–9.5) | < 0.0001 | 3.28 (1.6–6.6) | 0.0008 | |
| Comorbidity | Diabetes | 1.67 (1.0–2.7) | 0.04 | 1.58 (1.1–2.3) | 0.02 |
aRR risk ratio.
bCI confidence interval.
ctx treatment.
dThe univariate model for cavitary disease and multivariate model includes a missing indicator for the six people (18 samples) for whom X-ray was missing.