Top: Kaplan-Meier analysis for remaining in RUL-BP ECT, broken down by age (<35, blue; 35–49, green; 50–64, red; >65, black). Proportions remaining in RUL-BP treatments at treatment #12 differ among the 4 age buckets with older patients remaining in RUL-BP treatment for a longer time (χ2=10.26, p=0.0014, logrank test for trend). Bottom: Kaplan-Meier analysis for remaining in any type of ECT, broken down by age (<35, blue; 35–49, green; 50–64, red; >65, black). Proportion remaining in any ECT do not differ significantly among the 4 age buckets (χ2=2.42, p=0.12, logrank test for trend).