An Application of Structural Equation Modeling in Evaluating Accident/Injury Occurren
#1

PRESENTED BY:
Dr J Maiti

[attachment=10294]
An Application of Structural Equation Modeling in Evaluating Accident/Injury Occurrences in Underground Coal Mines
Introduction
 The purpose of this presentation is to show how Structural Equation Modeling (SEM) can be applied to real life problem solving.
Stages in SEM
• Stage 1: Developing a Theoretically Based
Model
• Stage 2: Constructing a Path Diagram of Causal Relationships
– Elements of a Path Diagram
– Examples of Path Diagrams
– Basic Terminology
– Assumptions of Path Diagrams
• Stage 3: Converting the Path Diagram into a Set of Structural Equations and Specifying the Measurement Model
– Structural Model
– Measurement Model
• Correspondence to Factor Analysis
• Specifying the Measurement Model
• Determining the Number of Indicators
• Accounting For Construct Reliability
– Empirically Estimating Reliabilities
– Specifying the Reliabilities
» Single-item Measures
» Use of Validated Scales or Measures
» Two-stage Analysis
» Methods of Specifying the Reliability
– Correlations Among Constructs and Indicators
• Stage 4: Choosing the Input Matrix Type and Estimating the Proposed Model
– Inputting Data
• Assumptions
• Covariances Versus Correlations
• Sample Size
– Model Estimation
• Estimation Technique
• Estimation Processes
• Computer Programs
• Stage 5: Assessing the Identification of the Structural Model
• Stage 6: Evaluating Goodness-of-Fit Criteria
– Offending Estimates
– Overall Model Fit
– Measurement Model Fit
• Composite Reliability
• Variance Extracted
– Structural Model Fit
– Comparison of Competing or Nested Models
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