Table 2.

Univariate analysis of factors potentially affecting yield of intensified case screening in populations with mixed or unknown HIV status

	Slope (95% CI)	p value
Country prevalence of tuberculosis*	−0·2 (−0·5 to 0·1)	0·21
Country prevalence of HIV†	−4·8 (−12·8 to 3·3)	0·24
Availability of culture‡	−0·3 (−1·6 to 1·1)	0·65
Symptom screening§	−0·3 (−2·4 to 1·8)	0·77

^*One unit increase=100 cases of tuberculosis per 100 000 people.

^†One unit increase=10% increase in prevalence.

^‡Coded as 0 if no culture available or 1 if culture available.

^§Coded as 0 if symptom screening used to identify people suspected to have tuberculosis or 1 if all individuals screened with sputum smears or culture.