Table 8.

Estimated p Values and Effect Sizes for Comparisons of Microglia Morphological Outcomes in the Motor Cortex Among Injury × Time Post-Injury Group Combinations from Generalized Linear Mixed Models With Negative-Binomial or Poisson Error Distributions

Comparison	No. microglia		No. branches		Branch length		No. end-points
	p value	Effect size	p value	Effect size	p value	Effect size	p value	Effect size
Sham 1 DPI vs. TBI 1 DPI	0.99	0.08	0.97	0.002	0.99	0.004	0.61	0.01
Sham 1 DPI vs. sham 7 DPI	0.89	0.16	0.99	0.002	0.99	0.003	0.74	0.01
Sham 1 DPI vs. sham 25 DPI	0.003	0.52	0.63	0.004	0.90	0.01	0.05	0.01
TBI 1 DPI vs. TBI 7 DPI	0.99	0.07	0.99	<0.001	0.99	0.01	0.50	0.01
TBI 1 DPI vs. TBI 25 DPI	0.002	0.53	0.21	0.01	0.57	0.01	<0.001	0.02
Sham 7 DPI vs. TBI 7 DPI	0.87	0.15	0.79	0.004	0.73	0.01	0.72	0.01
Sham 7 DPI vs. sham 25 DPI	0.14	0.37	0.96	0.002	0.98	0.01	0.78	0.01
TBI 7 DPI vs. TBI 25 DPI	0.01	0.46	0.26	0.01	0.21	0.02	0.10	0.01
Sham 25 TBI vs. TBI 25 DPI	0.99	0.07	0.99	<0.001	0.99	<0.001	0.99	0.001

Statistical significance was achieved if p < 0.05, whereas biological significance was achieved if effect size >0.20. Bold values denote biologically important effects.

DPI, days post-injury; TBI, traumatic brain injury.