A detailed review protocol has been published, and is available here https://f1000research.com/articles/10-491/v2. The final results have also been posted to medRxiv (https://doi.org/10.1101/2023.03.22.23287607).
Interim results of the review were also presented at the 2022 Peer Review Congress which can be viewed here https://peerreviewcongress.org/abstract/frequency-of-data-and-code-sharing-in-medical-research-an-individual-participant-data-meta-analysis-of-metaresearch-studies/