Rural clinics in Tanzania often face challenges in delivering consistent quality healthcare due to various systemic issues. A comprehensive search strategy was employed across multiple databases including PubMed, Scopus, and Web of Science. Studies were selected based on predefined inclusion criteria focusing on methodological rigor and relevance to the study objectives. The analysis revealed a trend towards increased patient adherence rates when clinics implemented standardised clinical protocols, although variability in outcomes remained significant between different settings. This review highlights the importance of adopting robust quasi-experimental methodologies for assessing clinical effectiveness in rural Tanzanian health facilities. Clinic managers and policy-makers should prioritise training on best practices and continuous quality improvement initiatives to enhance service delivery. Treatment effect was estimated with $\text{logit}(p_i)=\beta_0+\beta^\top X_i$, and uncertainty reported using confidence-interval based inference.