Table 2 .

Results of the adjustment of longitudinal multilevel models for the trajectory of LSA in older adults at risk of sarcopenia (RS)

		Parameter	Model 1	Model 2	Model 3	Model 4
Fixed effects
Initial LSA, p0i	Intercept	γ00	30,71 (1,91)***	27,70 (1,899)***	26,36 (2,056)***	64,43 (6,25)***
	Sex (ref: men)					–
	Women	γ01				− 19,78 (5,74)***
	Age (ref: 60—69 years)					–
	(70–79 years)	γ02				− 7,77 (3,67)*
	(80–89 years)	γ03				− 14,08 (3,19)***
	BOMFAQ (ref: none or mild)					–
	(moderate to severe)	γ04				− 17,73 (5,40)**
	Total walk (ref: active)					–
	(inactive)	γ05				− 12,01 (3,28)***
	(insufficiently active)	γ06				− 0,148 (3,21)
	Sex*BOMFAQ (men* none or mild)					–
	(women * moderate to severe)	γ07				13,32 (5,84)*
LSA rate of change, p1i	Intercept	γ10		0,431 (0,122)***	3,020 (0,966)**	2,50 (0,966)*
Quadratic term, p2		π2			− 0,476 (0,161)**	− 0,419 (0,161)**
Cubic term, p3		π3			0,020 (0,007)**	0,018 (0,007)**
Variance components
	Intra-individuals	σe2	273,59	127,41	120,86	114,52
	Between individuals: in the initial LSA	σ02	157,93	234,86	238,63	87,248
	Between individuals: at the rate of change	σ12		0,424	0,468	0,494
Fit quality statistics
AIC			2901,7	2882	2877	2808
BIC			2913,2	2905	2908	2865
TRV (model a, Model a-1)			–	25,64***	9,07*	83,15***

These models predict the LSA between baseline and the fourth survey wave (0–16 months) as a function of time (level 1) and covariates (level 2). BOMFAQ Brazilian OARS Multidimensional Functional Assessment Questionnaire; score of four points or more refers to the presence of moderate to severe functional limitation; LSA Life-Space Assessment; AIC Akaike Information Criterion. BIC Bayesian Information Criterion. LRT Likelihood Ratio Test

Obs.: Run in NLME package of Software R, estimator = ML

 ~ p < 0,10; * p < 0,05; ** p < 0,01; *** p < 0,001