Figure 1
From: Risk-adjustment of diabetes health outcomes improves the accuracy of performance benchmarking
Unadjusted and risk-adjusted funnel plots of mean HbA1c (%) levels. These funnel plots compare unadjusted and risk-adjusted clinical performance with regards to mean HbA1 (%) levels. 99.8% (outer limits) and 95% (inner limits) control limits are shown. (A) Mean unadjusted HbA1c (%) in patients with T2DM and (B) Mean risk-adjusted HbA1c (%) in patients with T2DM (adjusted for age, sex, BMI, duration and severity; (C) Mean unadjusted HbA1c (%) in patients with T1DM and (D) Mean risk-adjusted HbA1c (%) in patients with T1DM (adjusted for age, BMI, severity and smoking history).
