Percentages of patients younger and older than 65 years of age with co-morbidities at the start of RRT during the period 2005–14 (n <65 = 14 786 and n ≥65 = 18 937), standardized for the age and sex distribution of the incident RRT population, presented as the APC and 95% CI. DM (PRD and/or co-morbidity). MAL,  malignancy.