Background characteristics of respondents in World Health Surveys among high TB- burden countries, 2002-4 (18–54 years)*.

* Samples were nationally representative except in China, India, and the Russian Federation, where the survey was carried out in geographically limited regions;†Countries are ranked by TB incidence.£ Presence of symptoms of active TB disease was based on self-reports of blood in cough or phlegm and self-reports of coughs lasting more than 3 weeks in last 12 months.¶Proportions are gender specific weighted average using respective population; M: men; W: women.