The Optimal Timing of Platelet-Rich Plasma (PRP) Injection for Nerve Lesion Recovery: A Preliminary Study

Table 2

Post hoc analysis comparing various groups of treatment with respect to inflammation cells found on histopathologic analysis.

Treatment groups	Mean ± SD	value
Control and immediately after injury	6 ± 2.6 and 16 ± 11	0.149^a
Control and 3 days after nerve injury	6 ± 2.6 and 29 ± 3.3	0.000^b
Control and 7 days after nerve injury	6 ± 2.6 and 14 ± 6.7	0.011^b
Control and 14 days after nerve injury	6 ± 2.6 and 5 ± 1.3	0.589^a
Immediately after injury and 3 days after nerve injury	16 ± 11 and 29 ± 3.3	0.023^a
Immediately after injury and 7 days after nerve injury	16 ± 11 and 14 ± 6.7	0.774^a
Immediately after injury and 14 days after nerve injury	16 ± 11 and 5 ± 1.3	0.084^a
3 days and 7 days after nerve injury	16 ± 11 and 14 ± 6.7	0.000^b
3 days and 14 days after nerve injury	16 ± 11 and 5 ± 1.3	0.001^a
7 days and 14 days after nerve injury	14 ± 6.7 and 5 ± 1.3	0.005^a

^aMann–Whitney. ^bIndependent sample test. Significant difference ().