| Outcome Measures: |
Primary: Number of Index Dates, The date at which patients having their first prescription for any study drugs between 1st January 2014 and 30th September 2016 is defined as index date. Results observed were based on index dates used for comparing drugs between the classes. The reported data represent the number of time a prescription was written between 1st January 2014 and 30th September 2016., From 1st January 2014 to 30th September 2016 (At index date)|Age (Years), Age of all patients in years calculated for index dates computed from patients in the database. Analysis was done based on index dates used for comparing drugs between the classes. The reported data represent the number of time a prescription was written between 1st January 2014 and 30th September 2016., From 1st January 2014 to 30th September 2016 (At index date)|Sex (Male/Female), Gender of all patients observed for index dates computed from patients in the database. Results observed were based on index dates used for comparing drugs between the classes. The reported data represent the number of time a prescription was written between 1st January 2014 and 30th September 2016., From 1st January 2014 to 30th September 2016 (At index date)|Estimated Glomerular Filtration Rate (eGFR), Estimated glomerular filtration rate (eGFR) was calculated based on the age at index date and the latest serum creatinine at index date (or during the observation period) using formula eGFR millilitre/minute/1.73 meter\^2 (mL/min/1.73 m\^2) = 194 × (Creatinine)\^-1.094 × (age in year)\^-0.287 (× 0.739 if female). Analysis was done based on index dates used for comparing drugs between the classes., Within 6 months from index date|Prescription Rate of Each Class in Each eGFR Renal Impairment (RI) Level, Renal impairment (RI) is a common complication in patients with type 2 diabetes mellitus (T2DM). Results observed were based on index dates used for comparing drugs between the classes., Within 6 months from index date|Percentage of Concomitant Medications by OAD Classes, Concomitant medication is the drug prescribed other than drug under study in the OAD class on index date. Results observed were based on index dates used for comparing drugs between the classes., On the index month|Percentage of Previous Medications (Premedications) by OAD Classes., Previous medication is the drug prescribed other than drug under study in the OAD class before index date. Results observed were based on index dates used for comparing drugs between the classes, On the index month|Percentage of Comorbidities by OAD Classes., The additional diseases co-occuring, defined by International classification of Diseases, tenth revision (ICD-10) code. Results observed were based on index dates used for comparing drugs between the classes., On the index month | Secondary: Number of Prescriptions of OAD by Each Renal Impairment (RI) Stages, This outcome observes number of index dates for each class of OAD as per RI classes. RI classes were defined based on eGFR values. Results observed were based on index dates used for comparing drugs between the classes., Within 6 months from index date
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