Assessment of Epidemiology extra pulmonary tuberculosis in Hamadan province 2006-2012

Tuberculosis (TB) is one of the oldest diseases worldwide with a great deal of mortality. It consists of either pulmonary or extra-pulmonary type with 15% of tuberculosis cases are caused by the latter. The most common site of extra-pulmonary TB is in lymph glands (nearly 40% of the cases). The objective of the current study is the epidemiological assessment of the contributors of extra-pulmonary TB in Hamadan province. 250 patients with extra-pulmonary TB diagnosed between 1384 till 1390 had been evaluated and the data on age, gender, residential and clinical status had been gathered. For analytical purposes Chi square and T-test were used by Statistical software version 16 (SPSS- 16). There were 115 men (46% of sample) in the study. 171 patients (68.4%) were urban residents. After diagnosis of TB, 14 patients had been deceased. The mean (SD) of age of the patients was 43.6 (19.9) years with 37.6% of them older than 50. The incidence rate of extra-pulmonary TB is found to be 2.1(per one hundred thousand persons) and 39% lymphatic TB as the most common engaged site (39% of the times). based on the our results the epidemiological perspective of extra-pulmonary TB in Hamadan is consistent with other areas in the country. Also we found that the diagnosis procedures for extra-pulmonary TB are acceptable so that one third of the TB patients would have been diagnosed as cases.