|
Reference standard
|
Predictors
|
Positive likelihood ratio
|
(95% CI)
|
Negative likelihood ratio
|
(95% CI)
|
|---|
|
Tuberculosis suspected by respiratory physician*
| | | | | |
| |
Previous tuberculosis
|
2.6
|
(1.9–3.5)
|
0.75
|
(0.67–0.84)
|
| |
Haemoptysis
|
4.8
|
(2.2–10.3)
|
0.91
|
(0.86–0.96)
|
| |
Night sweating
|
2.8
|
(1.8–4.2)
|
0.77
|
(0.68–0.87)
|
| |
Weight loss
|
3.5
|
(2.3–5.6)
|
0.75
|
(0.66–0.84)
|
| |
Pleuritic pain
|
2.5
|
(1.5–4.1)
|
0.90
|
(0.84–0.95)
|
| |
No difficulty breathing
|
1.6
|
(1.2–2.1)
|
0.88
|
(0.80–0.96)
|
| |
No wheeze
|
1.2
|
(1.1–1.4)
|
0.70
|
(0.53–0.92)
|
| |
All 7 predictors
|
594
|
(232–1821)
|
0.22
|
(0.17–0.29)
|
|
Tuberculosis diagnosed by primary care physician**
| | | | | |
| |
Weight loss
|
2.9
|
(1.3–5.8)
|
0.81
|
(0.67–0.96)
|
| |
Night sweats
|
2.0
|
(1.0–4.6)
|
0.76
|
(0.54–0.97)
|
| |
Pleuritic pain
|
2.9
|
(1.0–4.8)
|
0.82
|
(0.63–1.00)
|
| |
All 3 predictors
|
16.7
|
(5.9–29.4)
|
0.50
|
(0.36–0.65)
|
- * area under ROC curve for model = 0.85. ** area under ROC curve for model = 0.74
