The reliability and validity for Japanese type 2 diabetes patients of the Japanese version of the acceptance and action diabetes questionnaire

Table 1 Item Response Theory parameter estimates for the Japanese version of Acceptance and Action Diabetes Questionnaire

Items		Item parameter estimates^a
Items		a	b ₁	b ₂	b ₃	b ₄	b ₅	b ₆
1	I try to avoid reminders of my diabetes.	0.97	−2.86	−2.36	−1.87	−1.06	0.20	0.73
2	I have thoughts and feelings about being diabetic that are distressing.^b	−0.76	1.76	1.31	0.11	−0.93	−1.53	−2.32
3	I do not take care of my diabetes because it reminds me that I have diabetes.	1.00	−3.13	−2.65	− 2.37	−1.92	− 1.09	− 0.62
4	I eat things I shouldn’t eat when the urge to eat them is overwhelming.	0.87	−2.25	−1.65	−0.64	0.86	1.45	2.18
5	When I have an upsetting feeling or thought about my diabetes, I try to get rid of that feeling or thought.	0.98	−2.76	−2.50	−1.73	−0.68	0.54	1.09
6	I avoid taking or forget to take my medication because it reminds me that I have diabetes.	0.91	−3.68	−3.05	−2.73	−2.02	−1.22	−0.64
7	I avoid stress or try to get rid of it by eating what I know I shouldn’t eat.	1.03	−2.44	−1.81	− 1.27	−0.12	0.73	1.29
8	I often deny to myself what diabetes can do to my body.	1.14	−2.57	−2.11	−1.59	−0.87	0.08	0.66
9	I don’t exercise regularly because it reminds me that I have diabetes.	0.72	−3.41	−2.49	−1.88	−1.19	0.04	0.52
10	I avoid thinking about what diabetes can do to me.	0.89	−2.43	−1.60	−1.08	−0.41	0.61	1.05
11	I avoid thinking about diabetes because someone I knew died from diabetes.	0.88	−3.53	−2.65	−2.44	−1.83	−0.48	0.14

^aEach of the b parameters corresponds to a probability = 0.5 of choosing the response that is + 1 from the subscript. The a parameter is the slope at the location of all b parameters and corresponds to the item’s ability to discriminate between individuals of different trait levels.^bAll items are reverse scored except Item 2

ISSN: 1751-0759