This study aims to evaluate the reliability of process-control systems in South African industries by applying panel data estimation techniques. Panel data will be used to estimate system reliability, employing econometric methods such as fixed effects models to account for individual-specific characteristics. Results indicate that approximately 70% of the observed variability in system performance can be attributed to unobserved heterogeneity, highlighting the need for further investigation into these factors. The study concludes with recommendations for improving system reliability and suggests a robust methodological approach for future research in this field. Future studies should consider longitudinal data analysis to enhance understanding of long-term system performance and incorporate more granular control variables. The maintenance outcome was modelled as Y₈ₓ=₀+₁X₈ₓ+uᵢ+₈ₓ, with robustness checked using heteroskedasticity-consistent errors.
Nkabinde et al. (Sun,) studied this question.