CKD indicates chronic kidney disease; ICD-9/10, International Classification of Diseases, Ninth Revision/International Statistical Classification of Diseases and Related Health Problems, Tenth Revision; PHPT, primary hyperparathyroidism.
aThe sum of subcategory totals exceeds the number of total exclusions because some patients met multiple exclusion criteria.
bPatients were excluded if age, sex, race/ethnicity, Area Deprivation Index, or urban or rural inhabitance were unknown.