Table 1.

Comparison of 725 men participating in the prospective study and 65 men lost to follow-up after recruitment

Parameter	Follow-up (n = 725)	No follow-up (n = 65)	p value*	p value**
Age (years)	65 ± 7	70 ± 8	< 0.0001
Body weight (kg)	80 ± 13	79 ± 15	0.29
Body height (cm)	169 ± 6	168 ± 7	0.21
BMI (kg/m2)	27.98 ± 3.64	27.75 ± 4.51	0.63
Fat mass (kg)	22.02 ± 7.48	23.23 ± 9.11	0.28
Lean mass (kg)	54.54 ± 6.66	52.16 ± 7.56	< 0.01	NS
Tobacco smoking (%)	11.8	11.6	0.98
Physical activity (h/week)	21.8 ± 12.7	17.2 ± 11.3	< 0.005	NS
Prevalent fractures (%)	13.8	19.7	0.18
Diabetes (%)	6.5	15.7	< 0.005
Rhumatoid arthritis (%)	1.4	5.7	< 0.01
Parkinsonism (%)	1.5	5.7	< 0.02
Lumbar spine BMD (g/cm2)	1.031 ± 0.184	1.052 ± 0.213	0.21
Femoral neck BMD (g/cm2)	0.845 ± 0.121	0.803 ± 0.127	< 0.01	NS
Femoral neck BMC (g)	5.111 ± 0.849	4.883 ± 0.934	< 0.04	NS
Femoral neck width (cm)	4.082 ± 0.316	4.123 ± 0.356	0.31
Trochanter BMD (g/cm2)	0.740 ± 0.109	0.691 ± 0.121	< 0.001	< 0.03
Total hip BMD (g/cm2)	0.966 ± 0.127	0.910 ± 0.157	< 0.001	NS
Whole-body BMC (g)	2706.6 ± 410.4	2550.3 ± 472.7	< 0.005	NS
Whole-body BMD (g/cm2)	1.210 ± 0.108	1.167 ± 0.121	< 0.003	< 0.05
Distal forearm BMD	0.524 ± 0.065	0.483 ± 0.070	< 0.0001	< 0.01
Ultradistal radius BMD	0.430 ± 0.064	0.399 ± 0.072	< 0.001	< 0.05
Radius BMD (g/cm2)	0.556 ± 0.068	0.513 ± 0.075	< 0.0001	< 0.01
Radius BMC (g)	2.743 ± 0.403	2.527 ± 0.422	< 0.0001	< 0.01
Radius width (cm)	2.471 ± 0.207	2.468 ± 0.216	0.94
Ulna BMD	0.476 ± 0.066	0.438 ± 0.070	< 0.0001	< 0.01
Ulna BMC (g)	1.502 ± 0.244	1.401 ± 0.246	< 0.0001	< 0.01
Ulna width (cm)	1.659 ± 0.136	1.684 ± 0.152	0.16

BMD bone mineral density, BMC bone mineral content, NS not significant

p* difference between the groups

p** age-adjusted difference between the groups