Fig. 5.
Effects of the suture versus through-the-needle catheter on postoperative pain score over time. Data are expressed as mean (diamond) and median (horizontal bar) with 25th through 75th (box); whiskers extend to the most extreme observations within 1.5 times the interquartile range of the first and third quartiles, respectively; circles represent outliers. At the 0.025 significance level, using a noninferiority delta of 1.25 points, the suture method was found noninferior to the through-the-needle method for average pain score, least pain, and current pain on the first two postoperative days, but not on worst pain.