Table 4.

Descriptive statistics showing intergroup comparison between group I (blood clot) and group II (PRF) for periapical healing and apical response at 1, 3, and 6 months, respectively

Index	Median group I	Median group II	Z value	Mann–Whitney U test	p-value groups I vs II
Periapical healing 1 month	1	1	−1.373	21.000	0.463
3 months	1	1	−1.369	21.000	0.463
6 months	1	1	0.000	32.000	1.000
Apical response
1 month	3	1.5	−0.766	25.500	0.505
3 months	3	1.5	−0.520	27.500	0.645
6 months	3	1	−0.717	26.000	00.574

SD denotes standard deviation; p-value represents the probability value p < 0.05 is considered significant