Table 4. Trends in the outcomes of the retroperitoneal approach, post-hoc analysis.

Post-hoc analysis (Games-Howell test)	P value
Time to post-op diet initiation
2009–2012 vs. 2013–2015	0.227
2016–2018	0.000
2013–2015 vs. 2016–2018	0.006
Post-op hospital stay
2009–2012 vs. 2013–2015	0.021
2016–2018	0.927
2013–2015 vs. 2016–2018	0.015
Post-op analgesic use
2009–2012 vs. 2013–2015	0.026
2016–2018	0.000
2013–2015 vs. 2016–2018	0.329

Post-op, postoperative.