คุณสมบัติทางจิตมิติของแบบวัดอาการวิตกกังวลและอาการซึมเศร้า

บทคัดย่อ

Abstract

           Objective  To investigate the psychometric property of the Hospital Anxiety Depression scale (HAD) Thai version.

           Materials and methods  Data from 3 studies, that is, psychosocial status of members in “TO BE NUMBER ONE” project, the development of mindfulness assessment scale and burdens of psychiatric care takers were retrieved. Selected cases (1228) consisting of juvenile delinquents, personnel, patients care givers were analyzed. Items were explored by using exploratory structural equation modeling (ESEM) analysis in 15% of cases selected by random sampling. The derived measurement models and 9 other models from literature reviews were tested by using the Mplus program. The model invariance across gender was also examined. The goodness of fit indices were Chi-square index, RMSEA, CFI and TLI. The kappa weighted agreement between the original version and the derived models were analyzed.

           Results  ESEM analysis was done in 197 cases and revealed 3-dimensional model (Model_b) i.e., anxiety, depress and agitation. The 4 anxiety items were 1, 3, 5 and 13 ; the 6 depress items were 2, 4, 6, 7, 12 and 14 and the 3 agitation items were 8 to 10. Then confirmatory analyses were compared among the other 9 models from literature reviews. The results revealed that the Model_b showed the goodness of fit indices at good level and demonstrated weak invariance across genders. The kappa weighted agreement of the cut-off score of the anxiety (0-7, 8-12 and ≥ 13) and the depression (0-4, 5-7 and ≥ 8) domains of Model_b compared to the original version were at good level (0.73, 0.63 respectively) but the agitation against the anxiety domain was at fair level (0.54).

           Conclusion   The HAD, consisting 3 dimensions, showed the acceptable validity and gender invariance among this study group containing youths, care takers, the elderly and lay person. Each domain can be used as an outcome measurement for health related problem in non-psychiatric cases.