African Aerospace Medicine | 10 September 2009
Methodological Assessment of Community Health Centres Systems in Tanzania Using Quasi-Experimental Design for Risk Reduction Measurement
M, o, s, e, s, S, i, m, i, y, u, ,, J, o, h, n, M, u, s, h, i, ,, J, a, n, e, N, g, u, n, j, i, k, a, ,, K, e, r, i, m, a, M, v, u, m, i
Abstract
Community health centres (CHCs) in Tanzania play a vital role in primary healthcare delivery, yet their effectiveness and efficiency require rigorous evaluation. A comprehensive search strategy was employed, including electronic databases such as PubMed and Web of Science. Studies were screened based on predefined inclusion criteria focusing on quasi-experimental design applications in Tanzania's CHC systems. The analysis identified a significant trend towards using pre-post designs with control groups to measure risk reduction outcomes, though variability in implementation quality was noted. Quasi-experimental designs are widely used but inconsistent application and measurement of risk reduction metrics pose methodological challenges that need addressing. Standardised guidelines for quasi-experimental design should be developed and implemented to ensure robust evaluation of CHC systems' effectiveness in Tanzania. Treatment effect was estimated with $\text{logit}(p<em>i)=\beta</em>0+\beta^\top X_i$, and uncertainty reported using confidence-interval based inference.