Table 1.

Comparison of the BMD in observation and control group (mean ± SEM)

Groups	No. s	lumbar	Neck	Ward	Troch	Shaft	Total
Control group	70	0.91±0.11	0.72±0.15	0.53±0.16	0.66±0.16	1.01±0.21	0.78±0.19
Observation group	70	0.82±0.09	0.62±0.14	0.45±0.11	0.58±0.12	0.94±0.19	0.70±0.16