Figure 4.
Proportion of patients receiving uterine tamponade and embolization before peripartum hysterectomy for atony by hospital volume quintile. Each quintile accounts for approximately 20% of overall deliveries, with the first quintile composed of the lowest volume hospitals and the fifth quintiles composed of the highest volume hospitals. Comparisons for both groups by hospital volume quintile were statistically significant (P<.01 for both groups).
