Date of Conferral





Health Services


John W. Oswald


The roles of immigration status in preventive health care services among Nigerian immigrants in the United States were investigated in this quantitative, cross-sectional survey study. About 260,724 Nigerian immigrants reside in the Unites States, but many do not complete lifesaving preventive health services such as immunization and screening, a major factor contributing to the rise in the cost of healthcare resultant from their use of emergency room services. This study investigated the extent to which immigration status independently explains the relationship between health disparities and risks in non-completion of preventive health care among Nigerian immigrants in the United States by comparing data from Nigerian immigrant adults residing in the United States to data from the African American adults in the United States. Socio-cognitive theory and the social behavioral model served as the conceptual framework for this study. There were 291 adult Nigerian immigrants in the cross-sectional survey using a purposive sampling technique. The data were analyzed using the Levene's test for homogeneity of variances, the Pearson's Chi- Square test and the Kruskal-Wallis non-parametric test. The Kruskal-Wallis results showed that there was a significant difference in screening for preventive care services among the 4 immigrant status categories (p = .000) based on length of residency in the United States. Understanding the health disparities of this population according to their country of origin and immigration status will assist health providers with awareness of population-specific health needs, and may be beneficial in designing public health programs for this population group.