Table 3.

Change in body weight by age and weight change category over a 5-year period

	Lost Weight	Stable Weight	Gained Weight	Average of Category
Age Category	Change in Body Weight ± SE (kg)
< 45 years old	− 7.4 ± 0.4	0.4 ± 0.2	6.8 ± 0.2	3.0 ± 0.2
≥45 years old	−6.7 ± 0.6	− 0.05 ± 0.4	5.6 ± 0.4*	0.8 ± 0.5***
Total Sample	−7.2 ± 0.3	0.3 ± 0.2	6.6 ± 0.2	2.5 ± 0.2
	Change in Fat Mass ± SE (kg)
< 45 years old	−7.0 ± 0.8	−1.0 ± 0.4	3.6 ± 0.3	1.0 ± 0.3
≥45 years old	−7.7 ± 1.0	− 1.2 ± 0.7	2.0 ± 0.7	−1.2 ± 0.5**
Total Sample	−7.2 ± 0.6	−1.1 ± 0.4	3.4 ± 0.3	0.5 ± 0.2
	Change in Fat-free Mass ± SE (kg)
< 45 years old	− 0.3 ± 0.7	1.5 ± 0.4	3.1 ± 0.3	2.2 ± 0.2
≥45 years old	0.9 ± 1.0	1.2 ± 0.6	3.7 ± 0.7	2.1 ± 0.4
Total Sample	0.1 ± 0.6	1.4 ± 0.3	3.2 ± 0.3	2.2 ± 0.2

Values are means ± SE

Statistical comparisons between the age categories within each weight change category (lost, stable, gained) were conducted using linear regression models. Separate linear regression models were conducted to generate the estimates for the total sample and the estimates for average of categories

*P < 0.05,**P < 0.01,***P < 0.001