Table 2.

General Linear Mixed Models Estimates for Physical 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	51.82 (7.37)	<.0001	50.19 (8.28)	<.0001
Time 0	Reference		Reference
Time 1	–8.94 (7.69)	.2454	–10.51 (9.61)	.2749
Time 2	–6.26 (11.01)	.5699	1.63 (14.81)	.9125
LEP groups
Low	Reference		Reference
Intermediate	7.99 (0.95)	<.0001	5.97 (1.00)	<.0001
High	10.66 (1.04)	<.0001	6.20 (1.10)	<.0001
Intermediate × Time 0	Reference		Reference
Intermediate × Time 1	2.48 (1.22)	.0429	1.51 (1.39)	.2764
Intermediate × Time 2	–0.58 (1.52)	.7052	–1.52 (1.71)	.3732
High × Time 0	Reference		Reference
High × Time 1	4.31 (1.26)	.0006	5.11 (1.46)	.0005
High × Time 2	2.60 (1.56)	.0972	3.42 (1.83)	.0624
Age	–0.24 (0.091)	.0091	–0.13 (0.092)	.1578
Sex	2.89 (0.98)	.0035	–1.40 (1.14)	.2184
Marital status	0.059 (0.94)	.9502	1.08 (0.92)	.2395
Education in years	0.13 (0.097)	.1704	0.088 (0.097)	.3636
Nativity (foreign born vs. U.S. born)	1.01 (0.74)	.1738	1.44 (0.71)	.045
English or Spanish interview	–2.18 (1.10)	.0478	–1.24 (1.12)	.2700
BMI			–0.29 (0.079)	.0002
High depressive symptoms			–1.66 (1.37)	.2224
Low cognitive status			–1.72 (0.89)	.054
Medical conditions			–2.45 (0.45)	<.0001
Total body muscle strength			0.14 (0.024)	<.0001

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.