Table 7.

Multiple Logistic Regression Model Predicting Tuberculosis Based on Data Available at a Second Visit Following Antibiotics in 207 Adults With HIV and a Positive Symptom Screen (Excluding C-Reactive Protein)

	Adjusted Odds Ratio (95% CI)	Beta Coefficient, Log (Adjusted OR)
Symptom change
Improved	1	0
Not improved	4.50 (2.19–9.23)	1.50
No. of symptoms	1.70 (1.12–2.57)	0.53
Duration of symptoms
<14 d	1	0
≥14 d	2.09 (1.10–3.97)	0.74
ART status
<3 mo	1	0
>3 mo	0.54 (0.25–1.14)	–0.62

Risk score = –2.90 + 1.50 (if symptoms not improved) + (0.53 × No. of symptoms) + 0.74 (if symptom duration ≥14 days) – 0.62 (if ART status >3 months).

Abbreviations: ART, antiretroviral therapy; CI, confidence interval; OR, odds ratio.