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September 2018

Coding Errors in Survey Study

JAMA Cardiol. 2018;3(9):898. doi:10.1001/jamacardio.2018.2189

In the article titled “Resuscitation Practices Associated With Survival After In-Hospital Cardiac Arrest: A Nationwide Survey,”1 published online April 6, 2016, and in the May 2016 issue of JAMA Cardiology, administrative errors occurred that required removing 1 hospital from the sample and replacing data from 2 surveys. All analyses were recalculated after correcting these errors; 1 of 3 initially identified resuscitation practices was no longer significantly associated with higher risk-standardized survival rates, while another variable was found to be significantly associated with higher risk-standardized survival.2 The overall conclusions remained unchanged. Additionally, 4 rows in Table 1 in the original publication listed incorrect values. The values in the “No. of beds, No. (%)” row and those in the “Academic status of hospital, No. (%)” row were switched. The row labels “Pulseless electrical activity” and “Asystole” were also switched. This article was corrected online.