How many people initially signed up for hydroxychloroquine treatment?

The figure of 1,200 is significant as it represents the initial number of individuals who signed up for hydroxychloroquine treatment, often referenced in studies and reports concerning the medication's effectiveness and use in various treatments. This number is important in understanding the scope of clinical trials or evaluations involving the drug, as it demonstrates a substantial enough sample size to gather meaningful data on its efficacy and safety.

In contrast, the other figures, such as 500, 2,500, and 3,000, while they may suggest plausible participation levels, do not align with the established specifics. They might reflect different stages of research or other treatments but are not indicative of the initial signup for hydroxychloroquine specifically. Therefore, the choice of 1,200 provides a precise context that allows for a clearer understanding of the scale of engagement in studies regarding this treatment option.