Table 4.

Comparison of microglial activation in three experimental groups by Kruskal-Wallis test (n = 21). Subjects in intrathecal group have significantly lower microglia cells as compared to sham group and intraperitoneal group

Variables	Experimental groups			Chi-square (df)	P-value*
	Sham group (n = 7) Median (IQR)	Intraperitoneal group (n = 7) Median (IQR)	Intrathecal group (n = 7) Median (IQR)
Microglia cell counts	15 (1)	13 (2)	10 (1)	13.05 (2)	0.002

^*Kruskall-Wallis tests

Post hoc test with Bonferonni corrections by Mann-Whitney test:

Sham group versus Intraperitoneal group, P = 0.066 × 3 = 0.198 (> 0.05);

Sham group versus Intrathecal group, P = 0.002 × 3 = 0.006 (< 0.05);

Intraperitoneal group versus Intrathecal group, P = 0.006 × 3 = 0.018 (< 0.05)