(a) Clinic follow‐up status of diabetes patients 13 weeks before the coronavirus disease 2019 pandemic state of emergency (pre‐period; 7 January to 6 April 2020), during the state of emergency period (inter‐period; 7 April to 25 May 2020) and 13 weeks after the state of emergency period (post‐period; 26 May to 24August 2020). There were 3,713 patients who visited our clinic during the pre‐period. Among them, 843 did not visit during the inter‐period, but 648 visited during the post‐period, whereas 195 did not. Among the initial 3,713 patients, 1,577 utilized only telemedicine after their pre‐visit, and 1,424 visited during the post‐period, whereas 152 did not. Among the initial 3,713 patients, 1,051 had only clinic visits during the inter‐period, and 1,026 visited during the post‐period, whereas 25 did not. Finally, among the initial 3,713 patients, 243 had both clinic visits and telemedicine, and 235 visited during the post‐period, whereas eight did not. Those 3,333 patients who visited both during the pre‐ and post‐periods comprised the analytic cohort of the year 2020. (b) Clinic follow‐up status of diabetes patients during the pre‐period of 2019 (6 January to 6 April 2019), inter‐period (7 April to 25 May 2019) and post‐period (26 May to 24 August 2019). There were 3,943 patients who visited our clinic during the pre‐period. Among them, 849 did not visit during the inter‐period, but 622 visited during the post‐period, whereas 227 did not. Of the initial 3,943 patients, 3094 visited the clinic during the inter‐period, and 2,986 visited during the post‐period, whereas 108 did not. Those 3,608 patients who visited both during the pre and post‐periods comprised the analytic cohort of year 2019.