This study develops a mediating model to explore the relationships between organizational characteristics, manager’s knowledge, management commitment, user involvement, information quality, and management information system effectiveness in small- and medium-sized enterprises in Vietnam. Adapting scales from previous research, the authors designed questionnaires, which they distributed to respondents in Vietnamese small- and medium-sized enterprises. Also, by employing a meta-analytic path analysis throughout structural equation modelling (SEM) with sample of 356 respondents, authors indicate that organizational characteristics are directly related to management information systems effectiveness. Moreover, manager’s knowledge, user involvement, and information quality show their important roles in the increase of management information system effectiveness, yet management commitment does not indicate a similar role in the growth of management information system effectiveness. Bootstrapping is utilized to discover the meditating role of information quality, illustrating that quality information mediates the linkages between user involvement, organizational characteristics, and management information systems. However, the mediating role of information quality in the relationship between management commitment, manager’s knowledge, and management information systems is not significant. This study contributes to the management information system literature as well as to enhance MIS effects in small and medium-sized enterprises.

Abstract
1. Introduction
2. Literature Review
    2.1. The Roles of Organizational Characteristics
    2.2. The Roles of Managers’ Knowledge
    2.3. The Roles of Managerial Commitment
    2.4. The Roles of User Involvement
    2.5. The Role of Information Quality
3. Research Methods
    3.1. Sample
    3.2. Scales
    3.3. Analysis
4. Results
    4.1. The Variability of Scales
    4.2. Confirmatory Factor Analysis
    4.3. Structural Equation Modelling Analysis
5. Conclusion
References

• Quang Bon LE(University of Fire Prevention and Fighting) Corresponding Author
• Minh Dat NGUYEN(Ho Chi Minh City University of Law)
• Van Can BUI(Hanoi University of Business and Technology)
• Thi Mai Huong DANG(Hanoi Metropolitan University)