We have located links that may give you full text access.
Interpretation of hemoglobin A(1c) (HbA(1c)) values among diabetic patients: implications for quality specifications for HbA(1c).
Clinical Chemistry 2001
BACKGROUND: Few studies have examined patients' views, knowledge, and understanding of glycohemoglobin A(1c) (HbA(1c)) testing. We explored such issues in patients with type 1 diabetes and used their statements to estimate analytical quality specifications for HbA(1c) testing.
METHODS: We recruited 201 patients from a hospital outpatient clinic. A questionnaire was used to collect information on diabetes characteristics, perceived knowledge of HbA(1c), last HbA(1c) value, HbA(1c) target value, and thresholds for action. Patients were asked to indicate the magnitude of change in HbA(1c) from 9.4% that they would consider to be a true (real) change; from their responses, we calculated patient-derived quality specifications for HbA(1c).
RESULTS: Fifty-eight percent of the patients felt they had "high" knowledge about HbA(1c), and >80% of responders knew their last HbA(1c) value, their target HbA(1c), and the threshold value of HbA(1c) for treatment intensification. The mean acceptable HbA(1c) value was 7.5%. Patients with lower values on their most recent tests reported lower target values for HbA(1c) and lower values for the upper HbA(1c) threshold for treatment intensification. An analytical CV (CV(a)) of 3.1% would be satisfactory for 75% of patients when HbA(1c) is increasing (80% confidence), and a CV(a) of 3.2% would be satisfactory for 75% when HbA(1c) is decreasing (95% confidence).
CONCLUSIONS: Type 1 patients' perceived knowledge about HbA(1c) testing is high. They are well informed about their own personal results and about target values and the upper HbA(1c) threshold for action. The patient-derived analytical quality specification for imprecision (CV) is 3.1%.
METHODS: We recruited 201 patients from a hospital outpatient clinic. A questionnaire was used to collect information on diabetes characteristics, perceived knowledge of HbA(1c), last HbA(1c) value, HbA(1c) target value, and thresholds for action. Patients were asked to indicate the magnitude of change in HbA(1c) from 9.4% that they would consider to be a true (real) change; from their responses, we calculated patient-derived quality specifications for HbA(1c).
RESULTS: Fifty-eight percent of the patients felt they had "high" knowledge about HbA(1c), and >80% of responders knew their last HbA(1c) value, their target HbA(1c), and the threshold value of HbA(1c) for treatment intensification. The mean acceptable HbA(1c) value was 7.5%. Patients with lower values on their most recent tests reported lower target values for HbA(1c) and lower values for the upper HbA(1c) threshold for treatment intensification. An analytical CV (CV(a)) of 3.1% would be satisfactory for 75% of patients when HbA(1c) is increasing (80% confidence), and a CV(a) of 3.2% would be satisfactory for 75% when HbA(1c) is decreasing (95% confidence).
CONCLUSIONS: Type 1 patients' perceived knowledge about HbA(1c) testing is high. They are well informed about their own personal results and about target values and the upper HbA(1c) threshold for action. The patient-derived analytical quality specification for imprecision (CV) is 3.1%.
Full text links
Related Resources
Trending Papers
Challenges in Septic Shock: From New Hemodynamics to Blood Purification Therapies.Journal of Personalized Medicine 2024 Februrary 4
Molecular Targets of Novel Therapeutics for Diabetic Kidney Disease: A New Era of Nephroprotection.International Journal of Molecular Sciences 2024 April 4
The 'Ten Commandments' for the 2023 European Society of Cardiology guidelines for the management of endocarditis.European Heart Journal 2024 April 18
A Guide to the Use of Vasopressors and Inotropes for Patients in Shock.Journal of Intensive Care Medicine 2024 April 14
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app
All material on this website is protected by copyright, Copyright © 1994-2024 by WebMD LLC.
This website also contains material copyrighted by 3rd parties.
By using this service, you agree to our terms of use and privacy policy.
Your Privacy Choices
You can now claim free CME credits for this literature searchClaim now
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app