Erratum to: Intensive Care Med DOI 10.1007/s00134-015-3735-z

A typesetting error resulted in incorrect reporting of a 95 % confidence interval in the last paragraph of the Results section, headed “Additional analyses”. The correct value was −0.08 to 0.14, so that the affected sentence should read:

“The average treatment effect on the treated was 0.03 (95 % CI −0.08 to 0.14, standard error 0.056)”.