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Timing of opioid dosing in the pubovaginal sling (PVS) group. Kaplan-Meier analysis of time to first opioid dose from intrathecal analgesia placement/surgical incision to administration of medication in minutes. Intrathecal opioid group – group 1, intermittent (dashed) line; Intravenous morphine group – group 2, solid line
