• A figure mentioned in an interview piece – saying that 40% of people with dementia receive a formal diagnosis – was wrongly attributed to the Department of Health. The figure actually comes from a joint study, Dementia prevalence and diagnosis rates, produced under the auspices of a charity, Alzheimer's Society, and others. (Taking the long view, 11 May, page 5, Society).
• Owing to an editing cut, an article said that John Higgins's World Snooker Championship win attracted one of the highest ever TV audiences for snooker. The missing qualifier explained that the match's peak audience figure of 6.4 million was, rather, one of the highest in the present era where TV channels have proliferated (Higgins targets seven titles after trumping Trump, 4 May, page 7, Sport). Also mentioned were previous allegations of match-fixing against the player. For the avoidance of misunderstanding: the scandal concerned his alleged involvement in discussions of this subject; there was no claim that a match had been fixed.
• In a photo spread relating to the Guardian's 190th birthday, a caption to a historical picture of the 1819 Peterloo massacre said that the image showed this large political meeting in support of parliamentary reform being "fired on by troops". The weapons used on this occasion did not include guns (The Guardian at 190: A brief history, 5 May, pages 22-23).