I am simply tying to explain that the data is being sent in by the trial sites throughout the study and not withheld until the last patient last visit occurs.
In blinded studies, the sponsor does not know whether the patient got drug or placebo but the data is entered into the trial database throughout the study
Think about it, some studies are thousands of patients and some are multiple years - do you really think no data is transmitted until the very end of the trial for all patients.
This does not mean that all the data is received promptly nor that questions issued by the sponsor on missing or confusing data are answered promptly. In my experience there were always a few sites that were notoriously slow but we worked to ensure the data was complete as soon as possible which is a prerequisite to database lock which was always a big project milestone.
I hope this helps answers Cdiddy’s question.