Table 4:

Univariate & Multivariable Models Mental Component Scale of Short-Form 12

	Univariate Model		Multivariable Model		Multivariable Model with Interaction
	β ± s.e.	p-value	β ± s.e.	p-value	β ± s.e.	p-value
Age	−0.027±0.011	0.013	0.03±0.01	0.023	0.03±0.01	0.02
Female Sex	−1.01±0.15	<0.001	−0.049±0.19	0.80	−0.05±0.19	0.79
Race		<0.001
White	Ref	Ref	ref	ref	Ref	Ref
Black	−1.56±0.25	<0.001	−0.82±0.24	0.001	−0.83±0.24	0.01
American Indian/Alaskan	−1.77±1.30	0.17	−1.09±1.00	0.28	−1.08±1.00	0.28
Asian	−1.16±0.37	0.002	−1.44±0.36	<0.001	−1.41±0.36	<0.001
Native Hawaiian	−1.63±2.71	0.55	−1.68±2.51	0.50	−1.69±2.52	0.50
Other	−2.31±0.75	0.002	0.054±0.71	0.94	0.07±0.72	0.93
Marital Status		<0.001
Married	Ref	ref	Ref		Ref	Ref
Widowed	−2.00±0.21	<0.001	−0.56±0.27	0.04	−0.56±0.27	0.04
Divorced	−2.36±0.26	<0.001	−0.77±0.24	0.001	−0.77±0.24	0.001
Separated	−3.77±0.79	<0.001	−1.13±0.70	0.11	−1.13±0.70	0.11
Never married	−1.67±0.46	<0.001	−0.74±0.50	0.14	−0.74±0.50	0.14
Current Smoker	−2.44±0.30	<0.001	−0.60±0.29	0.04	−0.61±0.29	0.04
Income Level (×104)	0.32±0.03	<0.001			0.30±0.29	0.31
Co-Morbidities
Arthritis	−1.95±0.22	<0.001	−0.41±0.20	0.045	−0.41±0.20	0.047
Hypertension	−1.26±0.19	<0.001	−0.21±0.19	0.26	−0.20±0.19	0.28
Depression	−14.7±0.18	<0.001	−14.2±0.26	<0.001	−14.2±0.26	<0.001
Cancer	−0.19±0.27	0.49	---	---	----	---
Chronic Bronchitis	−4.24±0.62	<0.001	−1.30±0.47	0.006	−1.30±0.47	0.006
Emphysema	−3.16±0.47	<0.001	−0.20±0.43	0.65	−120±0.43	0.64
Diabetes	−2.16±0.26	<0.001	−0.71±0.25	0.004	−0.70±0.25	0.005
Myocardial Infarction	−3.06±0.34	<0.001	−1.50±0.30	<0.001	−1.51±0.30	<0.001
Rural Status	0.23±0.23	0.33	0.11±0.18	0.53	0.41±0.33	0.21
BMI	−0.44±0.20	0.03
Underweight	−3.66±0.65	<0.001	−2.36±0.81	0.004	−2.29±1.29	0.08
Normal	Ref	ref	Ref	Ref	Ref	Ref
Overweight	0.65±0.17	<0.001	0.53±0.21	0.01	0.42±0.34	0.21
Obesity	−0.44±0.20	0.03	0.91±0.25	<0.001	0.28±0.47	0.56
BMI*rural
Under#MSA	---	---	---	---	−0.09±1.67	0.96
Over#MSA	---	---	---	---	0.12±0.41	0.77
Obese#MSA	---	---	---	---	0.78±0.52	0.14

All values presented are β ± standard errors with p-values. Univariate model consists of individual baseline characteristics predictor with physical component scale of short-form 12 as the outcome. Multivariable modeling consists of all significant predictors with their β ± standard errors with p-values with and without the metropolitan statistical area * body mass index interaction term.