Phase I study on the safety and preliminary efficacy of allogeneic mesenchymal stem cells in hypoxic-ischemic encephalopathy

Table 6 Friedman test results regarding the change in the functional independence measure cognitive scores of the patients before and after the operation

	n	Mean	SD	Mean rank	χ2	df	P value
Pre-test	8	5.38	1.06	1.63	37.500	5	0.000
Post-test 1 wk	8	5.50	1.41	1.75
Post-test 1 mo	8	7.50	2.45	2.88
Post-test 2 mo	8	9.13	3.83	3.88
Post-test 4 mo	8	11.00	5.68	5.00
Post-test 12 mo	8	13.75	6.23	5.88