Tetsuya Yamamoto1,2, Kenichi Sakurai3, Masahiro Watanabe4, Ikki Sakuma5, Nobuhisa Kanahara2,6, Akihiro Shiina2,6, Tadashi Hasegawa6, Hiroyuki Watanabe2, Masaomi Iyo6, Ryoichi Ishibashi7,8. 1. Division of Diabetes, Endocrinology and Metabolism, Department of Medicine, Kimitsu Chuo Hospital, Sakurai 1010, Kisarazu, Chiba, 292-0822, Japan. 2. Center for Forensic Mental Health, Chiba University, Chiba, Japan. 3. Department of Nutrition and Metabolic Medicine, Center for Preventive Medical Sciences, Chiba University, Chiba, Japan. 4. Department of Sustainable Health Science, Center for Preventive Medical Sciences, Chiba University, Chiba, Japan. 5. Department of Endocrinology, Hematology and Gerontology, Chiba University Graduate School of Medicine, Chiba, Japan. 6. Department of Psychiatry, Graduate School of Medicine and School of Medicine, Chiba University, Chiba, Japan. 7. Division of Diabetes, Endocrinology and Metabolism, Department of Medicine, Kimitsu Chuo Hospital, Sakurai 1010, Kisarazu, Chiba, 292-0822, Japan. ishibashi-cib@umin.net. 8. Department of Endocrinology, Hematology and Gerontology, Chiba University Graduate School of Medicine, Chiba, Japan. ishibashi-cib@umin.net.
Abstract
INTRODUCTION: Poor medication adherence and disordered eating are major self-care problems in patients with type 2 diabetes that worsen glycemic control and increase the risk of developing severe diabetes complications. Affective temperament, which remains mostly unchanged throughout life, is speculated to predict poor treatment response and high comorbidity. The aim of this study was to explore the link between affective temperament and poor glycemic control due to insufficient self-care. METHODS: This single-center case-control study involved 77 outpatients divided into the 'poor glycemic control' group (n = 52) and the 'better glycemic control' group (n = 25) based on their mean glycated hemoglobin (HbA1c) levels over the past 12 months. All participants underwent one-on-one interviews during which they completed the following psychometric questionnaires: (1) the Mini-International Neuropsychiatric Interview 5.0.0; (2) the Temperament Evaluation of Memphis, Pisa, and San Diego Auto-questionnaire; (3) a researcher-designed single question for assessing subclinical stress-induced overeating; and (4) the Morisky Medication Adherence Scale. The difference between two continuous independent variables was determined using Student's t test. Discrete variables were compared using the Chi-square (χ2) or Fisher's exact test. Multiple testing corrections were performed using the false discovery rate. RESULTS: Those outpatients in the poor glycemic control group exhibited significantly more stress-induced overeating (χ2 = 1.14, q statistic = 0.040) and poor medication adherence (t = 3.70, q = 0.034) than those in the better glycemic control group. However, there were no significant differences between the two groups in terms of affective temperaments, clinical eating disorders, or diabetes-specific distress. Patients with stress-induced overeating (t = - 2.99, p = 0.004) and poor medication adherence (t = - 4.34, p = 0.000) exhibited significantly higher scores for cyclothymic temperament than their counterparts. CONCLUSION: Cyclothymic temperament is significantly associated with disordered eating and/or poor medication adherence in patients with type 2 diabetes and is possibly linked to poor glycemic control.
INTRODUCTION: Poor medication adherence and disordered eating are major self-care problems in patients with type 2 diabetes that worsen glycemic control and increase the risk of developing severe diabetes complications. Affective temperament, which remains mostly unchanged throughout life, is speculated to predict poor treatment response and high comorbidity. The aim of this study was to explore the link between affective temperament and poor glycemic control due to insufficient self-care. METHODS: This single-center case-control study involved 77 outpatients divided into the 'poor glycemic control' group (n = 52) and the 'better glycemic control' group (n = 25) based on their mean glycated hemoglobin (HbA1c) levels over the past 12 months. All participants underwent one-on-one interviews during which they completed the following psychometric questionnaires: (1) the Mini-International Neuropsychiatric Interview 5.0.0; (2) the Temperament Evaluation of Memphis, Pisa, and San Diego Auto-questionnaire; (3) a researcher-designed single question for assessing subclinical stress-induced overeating; and (4) the Morisky Medication Adherence Scale. The difference between two continuous independent variables was determined using Student's t test. Discrete variables were compared using the Chi-square (χ2) or Fisher's exact test. Multiple testing corrections were performed using the false discovery rate. RESULTS: Those outpatients in the poor glycemic control group exhibited significantly more stress-induced overeating (χ2 = 1.14, q statistic = 0.040) and poor medication adherence (t = 3.70, q = 0.034) than those in the better glycemic control group. However, there were no significant differences between the two groups in terms of affective temperaments, clinical eating disorders, or diabetes-specific distress. Patients with stress-induced overeating (t = - 2.99, p = 0.004) and poor medication adherence (t = - 4.34, p = 0.000) exhibited significantly higher scores for cyclothymic temperament than their counterparts. CONCLUSION: Cyclothymic temperament is significantly associated with disordered eating and/or poor medication adherence in patients with type 2 diabetes and is possibly linked to poor glycemic control.
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