Diabetes, obesity & metabolism · 2026
Independent associations of mental health and diabetes complications with health-related quality of life: Evidence from a cross-sectional study.
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Hermanns Norbert, Kittel Philip, Cerletti Paco, Kulzer Bernhard, Ehrmann Dominic
Аннотация
AIMS: Health-related quality of life (HRQoL) is a key patient-reported outcome in diabetes care, yet the extent to which somatic and psychological factors are associated with HRQoL remains unclear. This study examined how demographic, diabetes-related, medical, and psychological factors were independently associated with HRQoL in adults with diabetes.
MATERIALS AND METHODS: A cross-sectional online survey was conducted among adults with diabetes in Germany (September 2024-February 2025). HRQoL was assessed using the EuroQol 5-Dimension 5-Level questionnaire (EQ-5D-5L). Participants also completed the PHQ-8 for depressive symptoms, the problem areas in diabetes (PAID) scale, and the hypoglycaemia fear survey (HFS-II). Clinical variables were self-reported and included diabetes type, duration, HbA1c, body mass index (BMI), and complications. Tobit regression accounted for the censored EQ-5D distribution. Blockwise multivariable models evaluated incremental explained variance across demographic, diabetes-related, comorbidity, and mental-health domains.
RESULTS: Of 1581 invitees, 734 completed the EQ-5D (mean age 56 ± 14 years; 73% type I). In multivariable analyses, female sex (β = -0.045), higher BMI (β = -0.029), diabetic foot syndrome (β = -0.078), neuropathy (β = -0.123), and elevated depressive symptoms (β = -0.212), diabetes distress (β = -0.069), and fear of hypoglycaemia (β = -0.085) were all independently associated with lower EQ-5D utilities (p < 0.01). Mental-health variables explained a similar proportion of variance (≈22%) as diabetes-related complications (≈20%). Mental health factors like depression, diabetes distress, and fear of hypoglycaemia showed highly significant associations with reduced HRQoL by up to 27%.
CONCLUSIONS: Both diabetes complications and mental health determine HRQoL in people with diabetes. Depression emerged as the strongest independent predictor reducing HRQoL by up to 21%. This underscores the importance of mental health for HRQoL. This findings highlight the relevance of integrating mental health assessment into diabetes management.
MATERIALS AND METHODS: A cross-sectional online survey was conducted among adults with diabetes in Germany (September 2024-February 2025). HRQoL was assessed using the EuroQol 5-Dimension 5-Level questionnaire (EQ-5D-5L). Participants also completed the PHQ-8 for depressive symptoms, the problem areas in diabetes (PAID) scale, and the hypoglycaemia fear survey (HFS-II). Clinical variables were self-reported and included diabetes type, duration, HbA1c, body mass index (BMI), and complications. Tobit regression accounted for the censored EQ-5D distribution. Blockwise multivariable models evaluated incremental explained variance across demographic, diabetes-related, comorbidity, and mental-health domains.
RESULTS: Of 1581 invitees, 734 completed the EQ-5D (mean age 56 ± 14 years; 73% type I). In multivariable analyses, female sex (β = -0.045), higher BMI (β = -0.029), diabetic foot syndrome (β = -0.078), neuropathy (β = -0.123), and elevated depressive symptoms (β = -0.212), diabetes distress (β = -0.069), and fear of hypoglycaemia (β = -0.085) were all independently associated with lower EQ-5D utilities (p < 0.01). Mental-health variables explained a similar proportion of variance (≈22%) as diabetes-related complications (≈20%). Mental health factors like depression, diabetes distress, and fear of hypoglycaemia showed highly significant associations with reduced HRQoL by up to 27%.
CONCLUSIONS: Both diabetes complications and mental health determine HRQoL in people with diabetes. Depression emerged as the strongest independent predictor reducing HRQoL by up to 21%. This underscores the importance of mental health for HRQoL. This findings highlight the relevance of integrating mental health assessment into diabetes management.