Randomized Clinical Trial
Copyright ©The Author(s) 2021.
World J Methodol. May 20, 2021; 11(3): 88-94
Published online May 20, 2021. doi: 10.5662/wjm.v11.i3.88
Table 2 Mean bone density in the 2 groups at 3 and 6 mo postoperatively

Group
n
mean ± SD
t
Significance (2-tailed)
Bone density 3 mo post-operation18946.3825 ± 66.293042.8220.015a
28830.3625 ± 95.52573
Bone density 6 mo post-operation181062.6575 ± 63.88916-0.5730.576
281083.8550 ± 82.82562