Safety and efficiency of Wharton’s Jelly-derived mesenchymal stem cell administration in patients with traumatic brain injury: First results of a phase I study

Table 9 Friedman test results of the changes observed in the Modified Ashworth Score left values of the patients before and after the intervention

	n	Mean	SD	Mean rank	χ2	df	P value
Preoperative	6	18.83	5.04	5.58	28.462	5	0.000
Postoperative 1st wk	6	18.50	4.85	5.25
Postoperative 1st month	6	16.33	4.68	3.83
Postoperative 2nd month	6	15.83	5.04	3.25
Postoperative 4th month	6	14.33	4.18	1.83
Postoperative 1st yr	6	13.00	4.60	1.25