Table 4.

Clinical Prediction Rule for the Diagnosis of Culture-Positive Tuberculosis Among 484 Seriously Ill Human Immunodeficiency Virus–Infected Participants Presenting With a Cough of Any Duration and ≥1 World Health Organization Danger Sign

Variable	Category	Points
Cough duration	≥14 d	1
Temperature >39°C	Yes	1
Unable to walk unaided	Yes	1
Tuberculosis on chest radiograph	Possible	1
	Likely	5
Hemoglobin, g/dL	3.3–8.3	3
	8.4–10.6	2
White cell count, ×109/L	1–6.5	1
	11.2–40.4	–2