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Updated: Jul 21, 2026

A Method for Manipulating Blood Glucose and Measuring Resulting Changes in Cognitive Accessibility of Target Stimuli
Published on: August 12, 2016
Cognitive behavioural therapy stabilises glycaemic control in adolescents with type 1 diabetes-Outcomes from a
Christina Wei1,2, Ruth J Allen1,3, Patricia M Tallis1,4
1Department Paediatric Endocrinology and Diabetes, Bristol Royal Hospital for Children, University Hospitals Bristol NHS Foundation Trust, Bristol, UK.
Background:
To compare the impact of cognitive behavioural therapy (CBT) with non-directive supportive counselling (NDC) on glycaemic control and psychological well-being in adolescents with type 1 diabetes mellitus (T1DM).
Materials And Methods:
Participants aged 11 to 16 years with T1DM (duration ≥1 year) from 4 UK-based paediatric diabetes centres were randomised to receive either 6 weekly sessions of 1-to-1 CBT (n = 43) or NDC (n = 42), with 2 further sessions at 6 and 12 months. Follow-up continued for 12 months postintervention. Outcome measures included glycated haemoglobin A1c (HbA1c) and psychological scores.
Results:
The HbA1c levels were available in 33 patients in each group for analysis. Between group difference of the overall changes in HbA1c across the study period was statically significant (P = .018). Geometric mean (range) HbA1c in the NDC group deteriorated from 68 (46-113) to 78 (48-128) mmol/mol (ie, 8.4 [6.4-12.5]% to 9.3 [6.5-13.9]%; P = .001), but was maintained in the CBT group from 72 (46-129) to 73 (51-128) mmol/mol (P = .51) (ie, 8.7 [6.4-14]% to 8.9 [6.8-13.9]%). More patients who have undergone CBT showed an improved or maintained HbA1c levels at 24 months (62.5% vs 35.5%, P = .032). Patients offered CBT with depressive scores in the lowest tertile (least depressive symptoms) showed improvement in HbA1c over time from 70 (46-102) to 67 (57-87) mmol/mol (P = .041) (ie, 8.6 [6.4-11.5]% to 8.3 [7.4-10.1]%), but not in the NDC group. The CBT showed borderline improvements in Children's Health Locus of Control (internal) scores over time compared with NDC (P = .05). The self-efficacy score showed significant improvement in both CBT (P < .001) and NDC (P = .03) groups over time.
Conclusions:
CBT demonstrated better maintenance of glycaemic control compared with NDC.
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