AstraZeneca said yesterday's trial conclusions were based on an "interim analysis" with all data received by the cutoff date of Feb. 17. Then, it promised to "immediately engage with the independent data safety monitoring board to share our primary analysis with the most up to date efficacy data." Results of this primary analysis will be available within 2 days.
https://www.astrazeneca.com/media-ce...rial-data.html
The numbers published yesterday were based on a pre-specified interim analysis with a data cut-off of 17 February.
We have reviewed the preliminary assessment of the primary analysis and the results were consistent with the interim analysis. We are now completing the validation of the statistical analysis.
We will immediately engage with the independent data safety monitoring board (DSMB) to share our primary analysis with the most up to date efficacy data.
We intend to issue results of the primary analysis within 48 hours.