We write to report that our publication in JAMA Pediatrics (JAMA Pediatr. Published online August 8, 2016. doi:)¹ included 177 study participants (among 316 reported in the JAMA Pediatrics article¹) from an earlier study by our group that was published in Pediatria Medica e Chirurgica (Pediatr Med Chir. 2014;36[4]:88. doi:).² However, that study² was not powered to assess the primary outcome that we reported in JAMA Pediatrics. The primary outcome that is appropriately powered in our article in JAMA Pediatrics is the need for mechanical ventilation within 72 hours from the beginning of the noninvasive respiratory support. We regret that we did not report the partial duplication of study participants in the JAMA Pediatrics article¹ and that we did not cite the previously published article. We apologize to the readers and editors of JAMA Pediatrics for any confusion this has caused.