Figure 4 : Complication rate: boxplot comparing complication rate of groups 1 to 4 (4 (≤24, >24 to ≤48, >48 to ≤72 and >72hours of epidural analgesia, respectively). Results are median and IQR.

*: group 4 vs. groups 1, 2 and 3; p=0.040, p=0.005 and p<0.001 respectively. Note that these include the full 30 dayperiod. See text and Table 2 for further discussion and details.

Koolwijk et al.Journal of Anesthesiology and Clinical Science  2013 2:27DOI : 10.7243/2049-9752-2-27