Table 1.

Characteristics of the study population and patient diagnostic rate in the Central Highlands in 2003

	Province			Total
	Dac Lac	Gia Lai	Kon Tum
Altitude (meter above sea level)	500–800 [24]	800–900 [25]	550–700 [26]
Survey
Population	27,908	23,511	17,527	68,946
Prolonged cough	352	507	439	1,298
% cough*	1.7 (0.8–2.5)	2.5 (1.8–3.2)	2.9 (2.1–3.7)	2.0 (1.8–2.2)
Number of new smear positive tuberculosis cases	4	5	7	16
Prevalence* (/100,000 population) (95%CI)	24 (1–48)	31 (18–45)	46 (1–112)	27 (11–44)
Notification
Population (≥ 15 years)	1,249,057	670,735	213,339	2,133,131
Number of notified new smear- positive tuberculosis cases	515	266	153	934
Notification rate (≥ 15 years) (/100,000 population)	41	40	72	44
Patient diagnostic rate	1.7 (0.85–41)	1.3 (0.88–2.2)	1.6 (0.64–72)	1.6 (1.0–4.0)

* weighing inversely proportional to the individual sampling probability