Fig. 3
From: Sublingual sufentanil after orthopaedic and abdominal surgery: long-term outcome and safety
a Boxplot showing the distribution of postoperative resting pain in patients from the day of surgery until the fifth postoperative day. Pain is measured by the numeric rating scale (0 = no pain, 10 = strongest possible pain). b Boxplot showing distribution of postoperative pain on exertion in patients from the day of surgery until the fifth postoperative day. Pain is measured by a numeric rating scale (0 = no pain, 10 = strongest possible pain)