Table 3.

General Linear Mixed Models Estimates for Mental Health-Related Quality of Life as a Function of Baseline LEP Groups Over a 6-Year Period (2000-2006).

	Model 1		Model 2
Explanatory variables	β (SE)	p value	β (SE)	p value
Intercept	56.60 (5.63)	<.0001	45.50 (6.45)	<.0001
Time 0	Reference		Reference
Time 1	–6.17 (6.95)	.375	4.25 (8.31)	.6095
Time 2	–12.95 (10.97)	.2387	–3.89 (10.87)	.7205
LEP groups
Low	Reference		Reference
Intermediate	1.25 (0.78)	.1101	1.18 (0.83)	.1526
High	3.95 (0.85)	<.0001	3.41 (0.91)	.0002
Intermediate × Time0	Reference		Reference
Intermediate × Time 1	2.26 (1.07)	.0353	–0.10 (1.13)	.9303
Intermediate × Time 2	4.61 (1.45)	.0016	2.64 (1.25)	.0355
High × Time 0	Reference		Reference
High × Time 1	1.26 (1.11)	.2575	–0.77 (1.21)	.525
High × Time 2	4.24 (1.51)	.0051	1.15 (1.36)	.3985
Age	–0.052 (0.069)	.4565	0.075 (0.071)	.2918
Sex	–0.74 (0.75)	.3202	–2.89 0.89	.0014
Marital status	2.20 (0.73)	.0028	1.45 (0.72)	.0444
Education in years	–0.008 (0.071)	.8987	–0.032 (0.064)	.6141
Nativity (foreign born vs. U.S. born)	1.20 (0.54)	.0264	0.77 (0.47)	.1008
English or Spanish interview	–3.17 (0.89)	.0004	–2.01 (0.90)	.0263
BMI			0.034 (0.062)	.5819
High depressive symptoms			–10.4 (1.12)	<.0001
Low cognitive status			0.40 (0.73)	.5796
Medical conditions			–0.23 (0.36)	.5304
Total body muscle strength			0.043 (0.02)	.0284

Note. Model 1 included age, gender, marital status, education, nativity, and language of interview.

Model 2 included BMI, high depressive symptoms, low cognitive status, total body muscle strength, and medical conditions (diabetes, heart attack, stroke, hypertension, arthritis, and cancer) along with variables in Model 1. LEP = lower extremity performance; B = coefficient estimates; SE = standard error; BMI = body mass index.