A tale of two construct validation analysis: Rasch model and exploratory factor analysis approach for Three-Factor Eating Questionnaire (TFEQ-R21) among Malaysian male workers
- Author:
Rosnah Ismail
;
Mohd Zali Mohd Noh
;
Noor Hassim Ismail
;
Azmi Mohd Tamil
- Publication Type:Journal Article
- Keywords:
Three-Factor Eating Questionnaire-R21;
male;
psychometrics;
factor analysis;
workplace
- MeSH:
Psychometrics
- From:
The Medical Journal of Malaysia
2015;70(3):169-176
- CountryMalaysia
- Language:English
-
Abstract:
SUMMARY
Introduction: This study aims for construct validation using
two approaches, i.e., exploratory factor analysis and Rasch
Model.
Methods: A cross sectional of 313 male workers from
multiple worksites had completed self-administered Malay
translated version of Three-Factor Eating QuestionnaireR21.
Data quality was assessed by misfit person criteria,
dimensionality, summary statistic, item measure and rating
(partial credit) scale followed by exploratory factor analysis
and internal consistency reliability assessment.
Results: The dual approaches of construct validation
analysis were complement to each other. Rasch analysis
supported the theoretical constructs of three eating
behaviour dimensions among respondents. In contrary to
exploratory factor analysis, it did show presence of a
newfound factor (α=0.04) came up from the separation of the
cognitive restrain and uncontrolled eating however, the
correlation between the two respective sub-factors were fair
(r=0.39) and weak (r= -0.08). Both analyses had detected
three problematic items but those items were
psychometrically fit for used for current study setting. The
data had adequate psychometric properties. Cronbach’s
alpha for cognitive restraint, uncontrolled eating and
emotional eating were 0.66, 0.79 and 0.87 respectively.
Rating scale quality was conformed to standard criteria.
Conclusion: Malay version TFEQ-R21 with promising
psychometric properties and valid measures for eating
behaviour dimensions among male workers aged between
20 to 60 years old is now available. Further development
should focus on the items in relation to Malaysian cultural
adaptation before its use for daily practice in future setting.
- Full text:P020150904401845280067.pdf
