Abstract: Objective To analyze the case detection situation in different population and regions by calcula-ting ratio of smear positive tuberculosis notification rate and prevalence rate. Methods We used prevalence data obtained from the 5th national tuberculosis prevalence survey (52/100 000, 152/252 940) and notification rate obtained from national tuberculosis information management system (39/100 000 person-year, 428 214 000/1 088 190 000), calculated ratio of notification and prevalence rate by gender, age groups, regions and provinces whether implemented world bank funded tuberculosis control project or not, then did direct comparative analysis of them. Results In 2010, the ratio of new smear positive tuberculosis notification rate and prevalence was 0.75 per person-year (39/52) for people over 15 years old. This ratio is lower in male(0.72 per person-year, 55/76) than female (0.85 per person-year, 23/27), and varied in different age groups(every 10 years as a group), highest (1.55 per person-year, 31/20)among 15- group and lowest (0.43 per person-year, 79/185) among ≥75 years of age group. Central provin-ces had higher ratio of notification and prevalence rate (1.22 per person-year, 51/42) than eastern (0.95 per person-year, 36/37) and western provinces (0.57 per person-year, 49/85). Ratio of notification and prevalence rate in world bank funded tuberculosis control project provinces (0.90 per person-year, 48/53) was higher than non-project provinces (0.80 per person-year, 43/54). Conclusion Our research finds out that the ratio of notification and prevalence rate among elderly patients and in western provinces were relatively low which suggests that we should enhance case detection work among them. Provinces which had implemented world bank funded tuberculosis control project thus started using directly observed treatment short-course strategy longer has higher ratio of notification and prevalence rate which proves they get better performance on case detection.

Key words: Tuberculosis, Pulmonary, Prevalence, Registries