Box plot of the cumulative quality of recovery (QoR) questionnaire scores for the control and paravertebral blocks (PVBs) groups in the preadmission clinic, upon hospital discharge, and on postoperative days (PODs) 2, 4, and 7. Median values are shown as solid line within box of 25th and 75th percentile values. Whiskers represent 5th and 95th percentile values. Data were compared using the Mann–Whitney U test and the Bonferroni–Holm correction. * Different from control.