TY - JOUR
T1 - Validity and Reliability of a (Brief) Diabetes “Survival Skills” Knowledge Test
T2 - KNOW Diabetes
AU - Youssef, Gretchen
AU - Ip, Edward H.
AU - Magee, Michelle
AU - Chen, Shyh Huei
AU - Wallia, Amisha
AU - Pollack, Teresa
AU - Touma, Emilie
AU - Bourges, Clayton
AU - Brecker, Lynne
N1 - Funding Information:
The KNOW Diabetes Knowledge Test Study Coordinators: Kristen Brown, BS, MedStar Health Research Institute, Hyattsville, MD. Protocol preparation and institutional review board submission: Debra Wells Thayer, CRNP, CDE, MedStar Health Diabetes Institute. This study was partially funded by the Charles and Mary Latham Fund.
Funding Information:
Funding: This study was partially funded by the Charles and Mary Latham Fund.
Publisher Copyright:
© 2019 The Author(s).
PY - 2019/4/1
Y1 - 2019/4/1
N2 - Purpose: The purpose of this study was to determine the validity and reliability of the KNOW Diabetes test, a survival skills knowledge test, in identifying essential self-care knowledge deficits in adults with type 2 diabetes mellitus (T2DM). Methods: The study was conducted in 3 United States cities among adults with T2DM. A pilot feasibility phase was followed by a validation phase. Both traditional and item response theory (IRT)–based analyses were conducted. Test items were scored against an answer key. Descriptive statistics, internal consistency evaluation using Cronbach’s alpha, IRT, reliability assessment using test-retest correlation, and construct validity analyses were conducted. Results: Consented adults (n = 280) with T2DM completed the study. In phase 1 (n = 53), the feasibility of implementation was demonstrated and resulted in a 15-question survey. In phase 2, participants (n = 227) completed the survey, with a subgroup (n = 54) completing it in a test-retest fashion. The test showed acceptable psychometric properties including unidimensionality, local independence, and differential item functioning. Concurrent validity testing showed that patients who are older, have a lower level of education, have Medicare or Medicaid, and have foot pain or numbness scored significantly lower than patients who did not. Divergent validity was assessed by testing differences between other comorbidities and revealed all tests to be nonsignificant. Conclusions: The KNOW Diabetes test is appropriate for identifying knowledge deficits in diabetes self-management survival skills.
AB - Purpose: The purpose of this study was to determine the validity and reliability of the KNOW Diabetes test, a survival skills knowledge test, in identifying essential self-care knowledge deficits in adults with type 2 diabetes mellitus (T2DM). Methods: The study was conducted in 3 United States cities among adults with T2DM. A pilot feasibility phase was followed by a validation phase. Both traditional and item response theory (IRT)–based analyses were conducted. Test items were scored against an answer key. Descriptive statistics, internal consistency evaluation using Cronbach’s alpha, IRT, reliability assessment using test-retest correlation, and construct validity analyses were conducted. Results: Consented adults (n = 280) with T2DM completed the study. In phase 1 (n = 53), the feasibility of implementation was demonstrated and resulted in a 15-question survey. In phase 2, participants (n = 227) completed the survey, with a subgroup (n = 54) completing it in a test-retest fashion. The test showed acceptable psychometric properties including unidimensionality, local independence, and differential item functioning. Concurrent validity testing showed that patients who are older, have a lower level of education, have Medicare or Medicaid, and have foot pain or numbness scored significantly lower than patients who did not. Divergent validity was assessed by testing differences between other comorbidities and revealed all tests to be nonsignificant. Conclusions: The KNOW Diabetes test is appropriate for identifying knowledge deficits in diabetes self-management survival skills.
UR - http://www.scopus.com/inward/record.url?scp=85062332828&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85062332828&partnerID=8YFLogxK
U2 - 10.1177/0145721719828064
DO - 10.1177/0145721719828064
M3 - Article
C2 - 30803399
AN - SCOPUS:85062332828
SN - 0145-7217
VL - 45
SP - 184
EP - 193
JO - Diabetes Educator
JF - Diabetes Educator
IS - 2
ER -
