Prevalence of Smear Positive Pulmonary Tuberculosis and its Associated Risk Factors among Patients Attending Nekemte Referral Hospital, Western Ethiopia

Abstract

Tuberculosis (TB), one of the widest spread infectious diseases, is the leading cause of death in the world. TB is one of the major causes of morbidity and mortality in the horn of Africa with Ethiopia carrying a heavy burden; it is the third most populous country in Africa. The aim of this study is to determine the prevalence of smear positive pulmonary TB (PTB) and its associated risk factors among TB suspected patients attending Nekemte Referral Hospital. Oromia Region State, Western,  Ethiopia. A cross sectional study was conducted among 170 TB suspected patients attending Nekemte Referral Hospital from April 1 to May 15, 2012. Convenience sampling technique was used to select the study subjects. The sputum sample was collected and examined following national guide line for diagnosis of TB using direct Ziehl – Nelson staining and sodium hypochlorite concentration techniques. To collect data related to associated risk factors for PTB, pretest structured question was employed. The collected data was analyzed using SPSS version 16 and described using descriptive statistic and binary logistic regression modeling. The prevalence of smear-positive PTB is 9.41% and 15.88% by direct and sodium hypochlorite concentration Ziehle-Nelson staining technique, respectively. Factors significantly associated with smear-positive PTB were level of education primary (AOR=17.78) and secondary education (AOR=736.19), occupation of merchant (AOR =0.03), sex male (AOR= 0.089), marital status of married (AOR=0.26), monthly income between 500-1000 (OR 0.002), urban residence (AOR= 0.39) and having close contact history with TB patient (OR=AO.113). The prevalence of Smear positive PTB is high at the study area and it is mostly associated with soci-demographic factors and close contact with TB patient.