Mortality risk in patients with autosomal dominant polycystic kidney disease

BMC Nephrology

Table 1 Eligibility criteria

Cohort	Inclusion criteria
ADPKD Non-ESRD CKD	▪ Had at least 2 records with an ADPKD diagnosis code (ICD-9-CM codes: 753.13, 753.12; ICD-10-CM codes: Q61.2, Q61.3) in the CKD database across all available years
	▪ Was included in the 2014, 2015, or 2016 CKD cohort, as defined by the researcher’s guide [22] as having met both of the following criteria: • For the entire year, the patient was Part A and Part B entitled and was not enrolled in a health maintenance organization • The patient had at least 1 CKD diagnosis code from an inpatient or home health or skilled nursing facility SAF, or at least 2 CKD diagnosis codes from a physician or supplier, durable medical equipment, or outpatient SAF with different claim dates
	▪ The patient was alive and did not receive ESRD services as of 1 January 2014
ADPKD ESRD	▪ Had at least 1 ADPKD diagnosis code (ICD-9-CM codes: 753.13, 753.12; ICD-10-CM codes: Q61.2, Q61.3) reported in the ESRD Medical Evidence Report form [20] as the primary cause of renal failure
	▪ First ESRD service date was on or before 1 December 2016 so that each patient would have at least 1 month of follow-up before the end of the study period
	▪ Was alive (based on the death date) as of 1 January 2014
	▪ Had no flag for a data issue

ADPKD Autosomal dominant polycystic kidney disease, CKD Chronic kidney disease, ESRD End-stage renal disease, ICD-9-CM International Classification of Diseases, Ninth Edition, Clinical Modification, ICD-10-CM International Classification of Diseases, Tenth Edition, Clinical Modification, SAF Standard Analytic File (CMS)

ISSN: 1471-2369