An Evaluation of the Psychological Life Quality of Women with Disabled Children with Box Behnken Experimental Design
Abstract
The purpose of this study was to implement the BBD method, which is a response-surface method, quantitatively and compare it with three-way analysis of variance. In the study, we used the short-form The World Health Organization Quality of Life WHOQOL-BREF-TR scale, which was developed by the World Health Organization and was tested by Eser et al. (1999) to determine its validity and reliability. This approach allowed us to attempt to determine the optimal variable combination in the psychological quality of life of mothers with intellectually-disabled children. The research was conducted with 540 mothers who had intellectually-disabled children. By use of 33 Box Behnken experimental design (BBD), which is a response surface method, variables and levels were determined according to the balanced incomplete block design. According to the results, the main effects of the mother’s age and the number of children were statistically significant. In addition, the interaction effect of “the mother’s age*the time she learnt the disability” was significant. The R2 value of the model was found to be 90.33%. When the same set of data was analyzed via three-way analysis of variance, both the main effects and the interaction effects were found to be insignificant. The response surface method may be an alternative to the analysis of variance in the factorial experiments that are used frequently in the social sciences and in research related to social work.
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References
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