Table 2. Mean and standard deviation of bone loss for each time point and difference between several assessment times throughout the study period.

	Mean and standard deviation	1 y	3 y	5 y
a Considered significant at p < 0.05.
1 month (1 mo)	0.224 ± 0.184	p < 0.05 a	p < 0.05 a	p < 0.05 a
1 year (1 y)	1.361 ± 0.166		0.054	0.071
3 years (3 y)	1.466 ± 0.371			0.102
5 years (5 y)	1.61 ± 0.371