The Construct Validity of Khon Kaen University Family Quality of Life Scale: An Exploratory Factor Analysis

Abstract

This research aimed to examine the construct validity of the Khon Kaen University Family Quality ofLife Assessment Tool (KKU FQoL) as perceived by the family member. A simple random sample withoutreplacement of 600 families of cloth making women from Northeastern Thailand was conducted. The contentvalidity of questionnaire was approved by a panel of 21 local experts. The reliability of the questionnaire, testedusing Cronbachí Alpha Coefficient, was 0.95, 0.89, 0.94, and 0.94 when trying out in the provinces of KhonKaen, Udornthani, Yasothorn, and Ubonratchathani respectively.  Factor analysis of 55 variables from 4 factorson the KKU Family Quality of Life was done using a correlation matrix method, and then using the Orthogonalrotation method with Varimax. The variables with values at 0.3 and above were selected. Additionally, thefactors that contained more than three variables were also selected. Finally, the left 51 items for assessmentwere remained. Results from this study indicated that the KKU FQoL scale showed good reliability and constructvalidity. It can be applied in evaluation of future family quality of life developing programs.