Type 2 Diabetes Mellitus, Chronic Kidney Disease

Inclusion Criteria

- Patients must fulfill the following criteria to be included in the EMR T2DM sample:
-- Adults of 30 years of age and more in the EMR
-- AND identification of T2DM in the EMR by:
--- At least one GP consultation with a diagnosis of T2DM recorded in the EMR
--- AND/OR at least 3 prescriptions (at different dates) of a T2DM marker treatment (oral antidiabetic agents, OAD or GLP-1a); and in case of large conditioning with at least 2 prescriptions during the study period
- Patients must fulfill the following criteria to be included in the SNDS T2DM sample:
-- Adults over 30 years of age and more in the SNDS
-- AND covered by the general health insurance plan in the SNDS
-- AND identification of T2DM in the SNDS by:
--- Patient receiving oral anti-diabetic treatment: at least 3 deliveries (at different dates) of oral antidiabetic agents (or at least 2 if at least 1 large conditioning) during one year
--- AND/OR patient having active long term disease (ALD) in year n with a diagnosis code of T2DM
--- AND/OR patient having at least one hospital stay for which the principal diagnosis (DP) or related diagnosis (DR) indicates T2DM 
--- AND/OR patient having at least one hospital stay for which the DP or DR indicates a complication of T2DM, and T2DM is identified as an associated diagnosis (DA) or as a DP / DR of a medical unit summary (RUM)

Exclusion Criteria

- Adults under 30 years of age
- Less than 1 year of history in SNDS prior to index date
- The beneficiaries who are insufficiently identifiable or who have a technical constraint of the SNDS (pseudonymous, pseudo NIRs, twins, ...)
- Patients affiliated to a Mayotte settlement institution (an oversea French department [(250 000 inhabitants/67 million in France]) as some variables such as long-term/chronic disease or death are poorly documented