Table 1. Description of Screening Strategies.

Symptom combinations
1.	Cough ≥2 weeks
2.	Any symptom (cough, haemoptysis, fever, night sweats, weight loss) of any duration or severity
3.	Cough ≥3 weeks or haemoptysis
4.	Productive cough ≥2 weeks
5.	Cough ≥2 weeks or weight loss
6.	Symptom combination used in this survey: Cough >7 days, and/or haemoptysis and/or ≥2 out of the following symptoms: fever (for >7 days), night sweats (for >7 days), weight loss resulting in a changed fit of clothes
Symptom and smear microscopy
7.	Cough ≥2 weeks and smear positive (≥ scanty [1–9 AFB/whole smear])
Chest radiography
8.	Any abnormality
9.	Pulmonary and/or pleural abnormalities only
Combinations (applied in parallel)
10.	Screening strategy used in this survey: Any abnormality on CXR and/or positive symptom screening as in #6 above
11.	Any abnormality on CXR and/or cough ≥2 weeks
12.	Any abnormality on CXR and/or cough >7 days (systemic symptoms excluded)
13.	Any abnormality on CXR and/or cough ≥2 weeks (rather than >7 days) and/or haemoptysis and/or ≥2 out of: fever (for >7 days), night sweats (for >7 days), weight loss (changed fit of clothes)
14.	Pulmonary and/or pleural abnormality on CXR and/or cough ≥2 weeks and/or ≥2 out of: fever (for >7 days), night sweats (for >7 days), weight loss (changed fit of clothes)
Sequential combination taking HIV-status into account
15.	Step 1: Symptoms screening first. If positive for any symptom of any duration, CXR is taken.Step 2: If HIV-negative, only persons with a CXR abnormality are suspected of TB. If HIV-positive, persons with either a CXR abnormality or a positive symptom combination as in #10 are suspected of TB.

The numbers are referred to in the text, tables and figure.