Meet Dr. Jonas Ranstam, the most prolific peer reviewer in the world. In 2016, this medical statistician was the overall winner of the Sentinels of Science Awards initiated by Publons to recognize the efforts of reviewers. He was also acknowledged as one of the Top Reviewers for 2016 by Publons. In this interview series, I talk to Dr. Ranstam about a range of topics from medical statistics to peer review. In part 1, Dr. Ranstams discusses a range of topics – from statistical methodology, the blog he maintains, and the problem with disclosing the uncertainly of findings in medical research to the irreproducibility crisis. Dr. Ranstam also talks about the common mistakes researchers make when presenting statistical data in their manuscripts. The second segment is all about peer review – Dr. Ranstam talks about review recognition, changing trends in peer review, and peer review scams. He also talks about the need to train peer reviewers at an early stage in their research career and shares some useful tips for them.