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This case study aims to evaluate the effectiveness of modern process-control systems on yield improvement in an industrial setting.

March 13, 2026Open Access

Methodological Evaluation of Process-Control Systems for Yield Improvement in Ghana: A Panel-Data Estimation Case Study

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Panel-data estimation demonstrates yield improvement in manufacturing, indicating effective system upgrades.

This case study aims to evaluate the effectiveness of modern process-control systems on yield improvement in an industrial setting.
Utilized a fixed-effects panel-data model to analyze operational data from multiple production lines before and after system implementation.
Applied a treatment dummy to measure the impact of the control system on yield.
Inferred results using cluster-robust standard errors for accuracy.
Found a statistically significant average yield improvement of 7.3 percentage points after implementing the control system.
The effect was larger in production lines with higher historical variability.

Kwame Asante (2010) studied this question.

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