Table 5.

Friedman test results regarding the change in the Wee Functional Independence Measure Motor scores of the patients before and after the operation

	n	Mean	SD	Mean rank	χ 2	df	P value
Pre-test	6	8.00	0.00	2.50	23.444	5	0.000
Post-test 1 wk	6	8.00	0.00	2.50
Post-test 1 mo	6	8.00	0.00	2.50
Post-test 2 mo	6	8.33	0.52	3.17
Post-test 4 mo	6	9.67	0.82	4.92
Post-test 12 mo	6	10.50	1.52	5.42

SD: Standard deviation.