Development of Eating Inhibition Control Behaviors Instrument for People with Type 2 Diabetes

Abstract

The purposes of this research and development were to develop and investigate the quality of eating inhibition control behaviors questionnaire (EICB) for type 2 diabetes (DM2). There were 3 steps of process validation: (1) analyzing content validity by 4 experts with validity index (I-CVI) and content validity for scale (S-CVI), (2) analyzing reliability and discrimination index by using Cronch’s alpha-coefficiant and t-score, and (3) verifying construct validity by 2nd order confirmed factor analysis (2ndCFA). The subjects consisted of 30 participants for reliability and discrimination test and 250 persons with DM2 selected by stratified random sampling and quota sampling for 2nd order confirmed factor analysis. The results showed that EICB questionnaire had 4 elements that separated into 23 items with a five-level scale by an interview form. The quality of the measurement were S-CVI = 0.98, Cronch’s alpha-coefficiant = 0.97, 2nd CFA with c2 = 243.281, df=211, c2 /df=1.153, p=0.063, GFI= 0.916, CFI=0.913, RMSEA= 0.032. Therefore, EICB questionnaire demonstrated the quality of the measurement index and it could be used to evaluate eating inhibition control behaviors in people with DM2 and risk group in order to assist self-control of their glucose levels.