Sir,We thank the authors for their comments1 and additional data presented. This work is highly relevant and confirms the impact of surgical delay on mortality in hip fracturepatients. The authors’ work further highlights the variability in observational data and the difficultly in distinguishing the effect of surgical delay alone. We, therefore, maintain that “the effect of preoperative timing on mortality and other important patient outcomes across various age groups remains controversial and may warrant a large randomized controlled trial to offer clear insights into the effects associated with early versus delayed surgery among hip fracturepatients.”2