Table 1. Estimated covariate statistics.

Covariate	Proportion	Std Error	95% CI Low	95% CI High	p-value
Depressed
Not Depressed	0.923	0.005	0.913	0.934
Depressed	0.077	0.005	0.066	0.087
Gender
Male	0.496	0.006	0.483	0.509	Reference
Female	0.504	0.006	0.491	0.517	<0.001
Age Group
18–34 years	0.329	0.009	0.309	0.348	Reference
35–44 years	0.210	0.008	0.193	0.226	0.457
45–54 years	0.223	0.007	0.207	0.238	0.117
55–64 years	0.176	0.006	0.162	0.189	0.272
65+ years	0.063	0.004	0.056	0.071	0.006
Race
Mexican American/Hispanic	0.147	0.031	0.082	0.213	0.010
Non-Hispanic White	0.678	0.035	0.602	0.753	Reference
Non-Hispanic Black	0.110	0.009	0.089	0.130	<0.001
Other	0.065	0.009	0.046	0.084	0.542
Smoking
Current Smoker	0.219	0.008	0.201	0.237	<0.001
Former Smoker	0.226	0.014	0.195	0.257	0.800
Never Smoked	0.555	0.019	0.515	0.595	Reference
Food Security
Full food security	0.782	0.013	0.755	0.809	<0.001
Food insecurity	0.218	0.013	0.191	0.245	Reference
BMI Category
Underweight	0.018	0.003	0.012	0.024	0.396
Normal	0.295	0.014	0.266	0.324	Reference
Overweight	0.331	0.011	0.307	0.355	0.358
Obese	0.356	0.011	0.333	0.379	0.035
Physical Activity
Low to high activity	0.451	0.018	0.411	0.490	Reference
No low to high activity	0.549	0.018	0.510	0.589	0.882
Diabetes Status
No Diabetes	0.910	0.005	0.900	0.920	Reference
Diabetes	0.090	0.005	0.080	0.100	0.001
Cardiovascular Disease Status
No Cardiovascular Disease	0.924	0.007	0.910	0.938	Reference
Cardiovascular Disease	0.076	0.007	0.062	0.090	0.009
Arthritis Status
No Arthritis	0.928	0.005	0.918	0.938	Reference
Arthritis	0.072	0.005	0.062	0.082	<0.001
Cancer or malignancy
No Cancer or malignancy	0.901	0.008	0.884	0.919	Reference
Cancer or malignancy	0.099	0.008	0.081	0.116	0.925
Use Central Nervous System
No	0.854	0.008	0.836	0.871	Reference
Medication(s)
Yes	0.146	0.008	0.129	0.164	<0.001
Use Psychotherapeutic Agents
No	0.915	0.006	0.902	0.928	Reference
Yes	0.085	0.006	0.072	0.098	<0.001
	Mean	Std Error	95% CI Low	95% CI High	p-value
Family Poverty Income Ratio (PIR)	3.013	0.044	2.918	3.108	<0.001
Number of times drink alcohol pm	6.235	0.290	5.615	6.856	0.005

Note: Multiple-imputation, survey estimation. Based on 20 imputations, primary N = 5,227. P-value indicates the significance of biomarker with depression.