Festive flu delay . . . and other stories.

A recent Minerva article (BMJ 2017;356:j54, doi:10.1136/bmj. j54) on antihypertensives and acute kidney injury inaccurately stated the results. The statement should have said “Compared with patients without chronic kidney disease, having stage 4 chronic kidney disease increased the risk of acute kidney injury by a factor of 6-8 times (independent of antihypertensive use).” Although the risk of acute kidney disease was slightly increased for the entire study population during time exposed to renin-angiotensin system inhibitors (overall incidence rate ratio 1.12, 95% confidence interval 1.07 to 1.17), among those with stage 4 chronic kidney disease it was actually reduced, compared with time exposed to other antihypertensives (incidence rate ratio 0.66, 95% CI 0.44 to 0.97).