Research Paper Volume 12, Issue 21 pp 21730—21746

Frailty modifies the association between opioid use and mortality in chronic kidney disease patients with diabetes: a population-based cohort study

Figure 1. The selection and analytic workflow of study participants from the longitudinal cohort of diabetes patients (LCDPs). CKD, chronic kidney disease; DM, diabetes mellitus; OPD, outpatient department.