Correction to Hospital surgical volume–outcome relationship in caesarean hysterectomy for placenta accreta spectrum

Abstract

Matsuo, K, Youssefzadeh, AC, Mandelbaum, RS, Sangara, RN, Matsuzaki, S, Matsushima, K, Klar, M, Ouzounian, JG, Wright, JD. Hospital surgical volume–outcome relationship in caesarean hysterectomy for placenta accreta spectrum. BJOG 2022; 129: 986–993. https://doi.org/10.1111/1471-0528.16993

The authors would like to correct the analytic approach in their investigation that assessed the association between hospital volume for caesarean hysterectomy and surgical morbidity in pregnant patients with placenta accreta spectrum. In the previous analysis, they calculated the relative hospital surgical volume as the summation of number of patients who had caesarean hysterectomy for placenta accreta spectrum over the 3-year study period by using the anonymized hospital classifiers. They would like to clarify that this analytic schema is to be corrected as the annualized number. In this annualized fashion, the relative hospital volume for caesarean hysterectomy was calculated in each year. The remaining patient-level analysis was unchanged.