Table 7.

Friedman test results regarding the change in the macrophage activation syndrome right scores of the patients before and after the operation

	n	Mean	SD	Mean rank	χ 2	df	P value
Pre-test	6	18.67	4.72	5.83	29.439	5	0.000
Post-test 1 wk	6	16.83	6.15	5.17
Post-test 1 mo	6	14.00	7.62	3.92
Post-test 2 mo	6	12.17	6.94	2.92
Post-test 4 mo	6	10.17	6.65	2.17
Post-test 12 mo	6	7.67	6.12	1.00

SD: Standard deviation.