A 3-Phase Quality Inspection Model for Improving Delivery Efficiency and Quality in Government Software Development Projects

Authors

  • Praphan Surapapha Doctor of Philosophy Program in Information Technology, College of Engineering and Technology, Dhurakij Pundit University
  • Worapat Paireekreng Doctor of Philosophy Program in Information Technology, College of Engineering and Technology, Dhurakij Pundit University

Keywords:

3 Phase Quality Inspection, Delivery Efficiency, Delivery Quality, Government Software Projects, ISO/IEC 29110

Abstract

This research presents a model for efficient, high-quality delivery of government software development projects using a 3-phase quality inspection method integrated into the project management process to address delays and reduce post-delivery rework. Inspections are systematically applied at three key checkpoints throughout the project lifecycle, verifying that project deliverables are complete, accurate and consistent with (1) the Scope of Work (SOW), (2) the Terms of Reference (TOR) and (3) the ISO/IEC 29110 standard.

A quasi-experimental study compared an experimental group of 91 projects (2015–2024) using the 3-phase model with a control group of 31 projects (2011–2014) that followed only the standard ISO/IEC 29110 process. Both groups delivered all project milestones on time, but the experimental group achieved much higher delivery efficiency. Over half of its milestones (53.9%) were completed ahead of schedule, compared to only 15.3% for the control group. Delivery quality was also slightly higher in the experimental group: 99.3% of its milestones required no post-delivery rework, versus 93.9% in the control group. A Mann–Whitney U test confirmed that the experimental group’s superior delivery efficiency and quality were statistically significant (p < .01). These results indicate that the 3-phase inspection mechanism enables defects to be detected and corrected early, significantly reducing delays and the need for post-delivery rework. A path analysis further confirmed that all three inspection phases have a significant positive impact on both delivery efficiency and quality. These findings underscore the value of proactive quality control from a project’s beginning to its end. Incorporating periodic inspections into project management processes can facilitate project delivery that is "faster and of higher quality." This preventive approach can be practically applied to address late delivery issues and significantly enhance the success of government software development projects.

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Published

2025-12-24

How to Cite

Surapapha, P., & Paireekreng, W. . (2025). A 3-Phase Quality Inspection Model for Improving Delivery Efficiency and Quality in Government Software Development Projects. Journal of Applied Statistics and Information Technology, 10(2), 60–80. retrieved from https://ph02.tci-thaijo.org/index.php/asit-journal/article/view/258935