Development and validation of the Diabetes Knowledge Assessment Test for use in medical rehabilitation

作者：Weeks Douglas L^*; French Brian F; Davis April D; Towle Linda A

来源：Disability and Rehabilitation, 2015, 37(9): 802-811.

DOI：10.3109/09638288.2014.940427

• Diabetes
• Diabetes Knowledge Assessment Test
• psychometrics
• reliability
• validity

Purpose: To develop and validate the Diabetes Knowledge Assessment Test (DKAT), an assessment designed to measure diabetes knowledge of medical rehabilitation patients with or without diabetes. Methods: Content validity methods were used to develop the DKAT, which was administered to rehabilitation patients to examine psychometric properties. Results: Subjects were 75 inpatients (56% with diabetes; 45% male), and 75 outpatients (49% with diabetes; 69% male). The initial DKAT consisted of 49 items, which was reduced to 32 items based on psychometric criteria. Point-biserial item discrimination indices ranged from 0.26 to 0.61. Item difficulty indices ranged from 27 to 96%. Cronbach's alpha was 0.82. Known groups construct validity comparisons revealed that patients with diabetes obtained significantly higher DKAT scores than patients without diabetes (p = 0.01), supporting construct validity. Scores did not differ significantly by gender, educational attainment, age, or outpatient versus inpatient (all p>0.05), further supporting construct validity. Confirmatory factor analysis identified two factors: "Complications" and "Risks-Symptoms-Management". Conclusions: Findings support claims that DKAT scores are valid and reliable for diabetes knowledge assessment across a range of rehabilitation conditions. It is appropriate for use with persons with or without diabetes engaging in rehabilitation services as an inpatient or outpatient.

• 出版日期2015