Aims/Introduction To investigate the national trend in the prescription of first‐line non‐insulin antidiabetic agents and total medical costs (TMCs) after prescribing the drug in Japanese patients with type 2 diabetes. Materials and Methods Using the National Database of Health Insurance Claims and Specific Health Check‐ups of Japan covering almost the entire Japanese population, we calculated the proportion of each antidiabetic drug from 2014 to 2017, and determined the factors associated with drug selection. The TMCs in the first year after starting the drugs were calculated, and factors associated with the costs were also determined. Results Among 1,136,723 new users of antidiabetic agents, dipeptidyl peptidase‐4 inhibitors were the most prescribed (65.1%), followed by biguanides (15.9%) and sodium–glucose cotransporter 2 inhibitors (7.6%). Sodium–glucose cotransporter 2 inhibitor and biguanide use increased during 2014–2017 (2.2%–11.4% and 13.7%–17.2%, respectively), whereas the others decreased. Biguanides were not prescribed at all in 38.2% of non‐Japan Diabetes Society‐certified facilities. The TMCs were the lowest among those who started with biguanides. Fiscal year, age, sex, facility, number of beds and comorbidities were associated with drug choice and TMCs. There were wide regional variations in the drug choice, but not in the TMCs. Conclusions Unlike in the USA and Europe, dipeptidyl peptidase‐4 inhibitor is the most prescribed first‐line medication for type 2 diabetes patients in Japan, while there is a wide variation in the drug choice by facility‐type and prefecture.

A B S T R A C TAims: To calculate process quality measures of diabetes care in Japan using nationwide exclusive claims database.Methods: Using the National Database of health insurance claims during 2015-2016, the proportions of outpatients who received recommended examinations at least annually https://doi.

Aim: To investigate (1) the association of lifestyle changes and living and working conditions with glycemic control and (2) whether treatment was intensified appropriately in patients with diabetes under the first COVID-19 state of emergency in Japan. Materials and Methods: A total of 321 participants were included. Participants completed a questionnaire regarding lifestyle changes, including diet, physical activity, and living and working conditions during the COVID-19 pandemic. The change in hemoglobin A1c (HbA1c) levels was estimated before (June 1, 2019 to August 31, 2019) and during (June 1, 2020 to August 31, 2020) the pandemic. Factors associated with changes in HbA1c levels were examined by multiple linear regression analysis. The proportion of patients who received treatment intensification for diabetes was compared between before and during the pandemic. Results: There was no significant change in HbA1c levels before the pandemic and during the pandemic (7.13 -0.98% vs 7.18 -1.01%, P = 0.186). Teleworking (estimate 0.206, P = 0.004) and living with a dog (estimate -0.149, P = 0.038) were significantly associated with changes in HbA1c levels after adjusting for covariates. There was no significant difference in the proportion of patients who received treatment intensification for diabetes during the pandemic and before the pandemic in either the elderly or nonelderly patients. Conclusions: Overall glycemic control did not worsen during the pandemic. Nonetheless, environmental factors, including telework, were found to influence glycemic control in patients with diabetes. Further studies are needed to clarify whether the COVID-19 pandemic could affect treatment intensification for diabetes.

Diabetes is associated with constipation, hard stools, fecal urgency, and incomplete evacuation, and poor glycemic control, duration, leanness, and nephropathy affect the risk of these symptoms.

To assess the temporal changes in the quality indicators pertaining to the process measures of diabetes care during a recent decade in Japan. Methods: A five-fold repeated cross-sectional study was conducted using health insurance claims data provided by the Japan Medical Data Center between April 2006 and March 2016. We identified 46,631 outpatients with antidiabetic medication who regularly visited hospitals or clinics at least every three months. We evaluated the quality indicators pertaining to glycemic control monitoring, lipid profile monitoring, retinopathy screening, nephropathy screening, and appropriate medication choice. The proportions of patients who received appropriate examinations/prescriptions, by observation period and either the type of antidiabetic medication or facility type were estimated using generalized estimating equation (GEE) models with multiple covariate adjustments. Results: The quality indicator values for appropriate medication choice and nephropathy screening improved between 2007 and 2015, whereas those for glycemic control monitoring and retinopathy screening remained suboptimal. Patients prescribed medications in larger hospitals were likelier to undergo the recommended examinations (e.g. retinopathy screening: 36.1% (95% CI: 35.4-36.7%) for clinic, 40.6% (95% CI: 39.1-42.2%) for smaller hospital, and 46.0% (95% CI: 44.8-47.2%) for larger hospital in 2015). Conclusions: Several process measures of diabetes care remained suboptimal in Japan.