American Journal of Applied Mathematics and Statistics
ISSN (Print): 2328-7306 ISSN (Online): 2328-7292 Website: http://www.sciepub.com/journal/ajams Editor-in-chief: Mohamed Seddeek
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American Journal of Applied Mathematics and Statistics. 2014, 2(6), 357-363
DOI: 10.12691/ajams-2-6-1
Open AccessArticle

Application of Binary Logistic Regression in Assessing Risk Factors Affecting the Prevalence of Toxoplasmosis

Mutangi Kudakwashe1, and Kasim Mohammed Yesuf2

1Department of Mathematics, Harare Institute of Technology, P O box BE277, Belvedere, Harare, Zimbabwe

2Kasim Mohammed Yesuf, Department of Statistics, University of Gondar, P O Box 196, Gondar, Ethiopia

Pub. Date: November 11, 2014

Cite this paper:
Mutangi Kudakwashe and Kasim Mohammed Yesuf. Application of Binary Logistic Regression in Assessing Risk Factors Affecting the Prevalence of Toxoplasmosis. American Journal of Applied Mathematics and Statistics. 2014; 2(6):357-363. doi: 10.12691/ajams-2-6-1

Abstract

Toxoplasmosis is a parasitic disease caused by the protozoan parasite Toxoplasma Gondii (T.gondii). The parasite infects warm-blooded animals among them humans especially those whose immunity has been compromised. The transmission mode of the parasite vary from living in unhygienic conditions, contact with cat faeces to contact with raw meat or the practice of raw meat eating, such as commonly practiced in Ethiopia. Binary logistic regression was used to determine the risk factors affecting the prevalence of toxoplasmosis in HIV/AIDS patients. Significant risk factors were detected using the Wald and the likelihood ratio tests. The model selected was then subjected to diagnostic checks to assess its fitness using the Hosmer and Lemeshow test as well as the Pearson, and deviance goodness of fit tests. The results showed that patients living under unhygienic conditions, aged patients, illiterate and less educated patients were mostly affected by toxoplasmosis. There was more prevalence in urban areas than in rural areas possibly due to the high density of people in urban areas.

Keywords:
logistic regression toxoplasmosis risk factors prevalence diagnostic tests HIV/AIDS

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