A study to compare the efficacy of polyether ether ketone rod device with titanium devices in posterior spinal fusion in a canine model

Table 2 Manual palpation and gross examination—comparison between control and treatment groups at different time intervals

Scores at different time intervals	Total number of animals (missing)	Control group	Treatment group	p value
8-week score	8(0)	1.13 ± 0.83	1.25 ± 0.71	0.751
16-week score^a	8(0)	2(1, 2)	2(1, 2)	0.295

^aMeans non-abnormal distribution and presented as median(range), analyzed using Wilcoxon rank-sum test