This assignment examines the relationship between antiretroviral therapy (ART) and changes in CD4 cell counts among HIV+ patients in Nigeria. It utilizes statistical analyses, including chi-square and multinomial tests, to assess the significance of factors such as gender, baseline CD4 count, weight, and ART switch on CD4 cell changes. The results indicate a significant association between gender, baseline CD4 count, weight, and ART switch with CD4 cell counts, while age group did not show a significant association.