Table 4. Summary of Repeated Measures to Investigate Trends of Changes in Pain Intensity in Three Groups of Participants Undergoing Hemorrhoidectomy.

Source of Variation	Sum of Squares	df	Mean Squares	F	P-Value
Time	136.272	1	136.572	119.282	< 0.001
Intervention + Time	5.337	2	2.668	2.331	0.104
Intervention	280.292	2	140.146	24.122	< 0.001
Error	470.598	81	5.810