This could introduce some systemic bias e.
Generic drugs usually cost less than the brand-name version.
Your doctor may avoid use of these drugs with dexamethasone.
Is the lower number of deaths in India compared to the rest of the world because of early guidelines to use steroids? Some are able to clear it with a heightened immune response.
Selection bias probably also occurred in this trial, and is important to consider when applying these results.
All patients started treatment on the first day of hospitalization and were not randomly selected.