1. To evaluate the association between Sodium-Glucose Co-Transporter-2 (SGLT2) inhibitor use and the occurrence of anemia in patients with chronic kidney disease (CKD) using a nested case-control design with incidence density sampling.
2. To evaluate anemia-related outcomes using a nested case-control-based analytical framework, including assessment of within-subject changes in anemia-related treatments and healthcare costs by comparing the period after study entry with the period after the index date (for cases) or matched reference date (for controls), and comparison according to SGLT2 inhibitor use:
A) Prescription patterns and treatment regimens for anemia, including analysis of medication types, dosing strategies, and duration of treatments B) Anemia-related healthcare costs C) Change in laboratory values
Eligibility
Sex
ALL
Min age
18 Years
Max age
—
Healthy volunteers
No
Inclusion Criteria:
1. Have two consecutive estimated glomerular filtration rate (eGFR) measurements \< 60 mL/min/1.73 m2 at least 92 days apart between April 17, 2014 and October 31, 2022.
2. Aged 18 years or older at the study cohort entry date.
3. Have at least one haemoglobin (Hb) measurement at the study cohort entry date or within 183 days before the study cohort entry date.
Exclusion Criteria:
1. Have less than 183 days of record history before the study cohort entry date.
2. Have any prescription record for an SGLT2 inhibitor at the study cohort entry date or within 183 days before the study cohort entry date
3. Have evidence of anemia at the study cohort entry date or within 183 days before the study cohort entry date.
* Hemoglobin (Hb) \< 13.0 g/dL for men or \< 12.0 g/dL for women
* Hematocrit (Ht) \< 39% for men or \< 36% for women
* Have a history of prescribed anemia-related medications and treatments at the study cohort entry date or within 183 days before the study cohort entry date.
4. Have evidence of anemia-causing conditions other than chronic kidney disease (CKD) at the study cohort entry date or within 183 days before the study cohort entry date.
5. Confirm at least one instance of hemodialysis, peritoneal dialysis, or kidney transplantation at the study cohort entry date or within 183 days before the study cohort entry date.
Primary outcome measure(s)
First occurrence of anemia (composite anemia outcomes) — From the study cohort entry date to first event occurrence (for cases) or matched reference date (for controls), up to 13 years The composite of anemia outcomes is defined as any of the following:
* Hb \< 13.0 g/dL for men or \< 12.0 g/dL for women
* Clinical diagnosis of anemia using ICD-10 diagnosis codes
* Initiation of anemia treatment (Erythropoiesis-Stimulating Agents (ESAs), Hypoxia-Inducible Factor-Prolyl Hydroxylase (HIF-PH) inhibitors, iron preparations, or red blood cell (RBC) transfusion
This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.
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