Early therapeutic effect of platelet-rich fibrin combined with allogeneic bone marrow-derived stem cells on rats' critical-sized mandibular defects

Table 2 Two-way ANOVA for the amount of granulation tissue (%) and the significance of comparisons

Groups	mean ± SD			Student t-test (P value)			Two-way ANOVA (P value)
	Week 1	Week 2	Week 4	1 × 2	1 × 4	2 × 4
I	0.03 ± 0.00	0.05 ± 0.00	0.20 ± 0.02	P > 0.05	P < 0.05	P < 0.05	P < 0.05
II	0.90 ± 0.03	0. 88 ± 0.03	0.40 ± 0.02	P > 0.05	P < 0.05	P < 0.05
III	0.88 ± 0.02	0.60 ± 0.03	0.12 ± 0.02	P < 0.05	P < 0.05	P < 0.05
Tukey's test (P value)
I × II	P < 0.05	P < 0.05	P < 0.05
I × III	P < 0.05	P < 0.05	P < 0.05
II x× III	P > 0.05	P < 0.05	P < 0.05