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. Author manuscript; available in PMC: 2010 May 1.
Published in final edited form as: Anesth Analg. 2009 May;108(5):1688–1694. doi: 10.1213/ane.0b013e318199dc86

Figure 1.

Figure 1

Effects of interscalene perineural infusion (ropivacaine, 0.2%, vs placebo) on average, least, and worst pain after outpatient shoulder surgery (Numeric Rating Scale: 0–10). Perineural infusions were discontinued on postoperative day 2. Postoperative day 2 pain scores represent the period of time from the previous phone contact until discontinuation of the infusion. Data are expressed as median (horizontal line), 25th–75th percentiles (box), and 10th–90th percentiles (whiskers). For tightly clustered data, the median horizontal line also represents 10th, 25th, 75th, and/or and 90th percentile(s), as appropriate.