There are long and chaotic outpatient queues existent in the available healthcare facilities located in Nigeria, which is a developing economy that is continually challenged within the healthcare sector by inadequate resources, lack of discipline within healthcare staff, and also traditional cultural and religiosity practices; such impacts the efficient delivery of healthcare services and leads to low life expectancy rates in Nigeria. The problem addressed by this study is how to manage the daily admittance of outpatients to the available healthcare facilities in Ikenne Local Government Area of Ogun State who practice intrusive culturally derived and diverse religious practices. A new modified socio-cultural queuing model addresses the problem via performing a comparative quantitatively constructed statistically based observation and evaluation of 1102 outpatient samples both of the current (pre-modification) and the socio-cultural modified (post-modification) system. The purpose of the study is to determine the effect of sociocultural practices on the efficiency and effectiveness of patient management techniques in the outpatient clinics of hospitals and health centers in Ikenne, Ogun State, South-West, Nigeria. The data collection and subsequent analyses is predicated on a general linear model. The three research questions and their accompanying hypotheses guide the data collection and two-phase analysis. The first phase is processed via observation of the delivery of healthcare service to 1102 outpatients utilizing the existing queue profile. The second phase involves the same observations of healthcare service delivery however such by utilizing the modified socio-cultural model. The collected two sets of data gathered from these two phases are regressed and compared with each other utilizing the ANOVA and t test to check for improvements within service delivery efficiency. The first and second research questions concerned the effect of socio-cultural practice on patients’ enrolment service time (admittance), nurses’ pre-consultation test and doctors’ examination time. The third research question investigates patient billing, drug dispensary and treatment times.

Results positively identified that the new sociocultural modified model not only reduces waiting times for those outpatients located within inadequately resourced healthcare facilities but can also increase service capacity thereby increasing system efficiency and performance. It is recommended that the healthcare industry, research scholars and public domain stakeholders should access these study findings via scholarly and industry publications, and also through social media platforms.