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. 2019 Dec 14;20(2):252–257. doi: 10.1007/s12663-019-01320-y

Table 3.

Inter- and intra-group analyses of TMJ sound

	Arthrocentesis + PRP (Group I) N (%)		Arthrocentesis (Group II) N (%)		Mann–Whitney test
	Present	Absent	Present	Absent	Mann–Whitney test
Pre-op (1)	7 (58.4)	5 (41.6)	6 (50)	6 (50)	66.00, p = 0.688 (NS)
1 month (2)	3 (25)	9 (75)	2 (16.67)	10 (83.33)	66.00, p = 0.628 (NS
3 months (3)	2 (16.67)	10 (83.3)	1 (8.33)	11 (91.67)	66.00, p = 0.688 (NS)
6 months (4)	1 (8.33)	11 (91.67)	1 (8.33)	11 (91.67)	p = 1 (NS)
Cochran test	Cochran’s Q = 13.105 p = 0.004 (S)	Cochran’s Q = 12.75 p = 0.005 (S)