Figure 1.
Percentage of adult patients aged 18-75 years in 3 cohorts with severely uncontrolled diabetes who obtained a quarterly glycated hemoglobin A1c test during 5 periods, Massachusetts. The measurement period was January–March 2018 through January–March 2019 for the 2017 cohort (n = 9021), January–March 2019 through January–March 2020 for the 2018 cohort (n = 9613), and January–March 2020 through January–March 2021 for the 2019 cohort (n = 9782). Note that the last measurement quarter of the 2017 and 2018 cohorts overlaps with the first measurement quarter of the subsequent cohort. Data source: MDPHnet.15,18