Table 2

Multivariate regression results

Individual DM status – multivariate logistic regression results
Category	Factor	Mean (SD) (range)	Coefficient (SE)	AUROC
Demographic	Age	49.4 (15.9) (20.0–80.0)	0.0467 (0.00185)*	0.695	0.711
	Female	50.9	−0.221 (0.0544)*
	African-American	10.2	0.633 (0.0688)*
	Hispanic	14.2	0.445 (0.0672)*
Socioeconomic	Household income	NA	−0.474 (0.127)*	0.653
Socioeconomic	Some college	61.1	−0.200 (0.0595)†	0.653

County-level DM prevalence – multivariate linear regression results
Category	Factor	Mean (SD) (range), %	Coefficient (SE)	R²
Demographic	Per cent <18 years old	22.3 (3.5) (0.0–40.9)	0.0567 (0.0112)*	0.377	0.619
	Per cent >65 years old	18.4 (4.6) (4.6–56.3)	0.0894 (0.00879)*
	Per cent female	49.9 (2.3) (27.8–56.6)	0.220 (0.0143)*
	Per cent African-American	9.0 (14.3) (0.0–85.2)	0.0465 (0.00230)*
	Per cent Hispanic	9.3 (13.7) (0.5–96.3)	−0.0502 (0.00223)*
Socioeconomic	Median household income	91.3 (2.1) (84.6–100.0)	−0.284 (0.0191)*	0.4
Socioeconomic	Percent some college	57.2 (11.6) (15.1–94.1)	−0.0869 (0.00339)*	0.4

Multiple regression results for models using factors shared between NHANES (individual level) and CHR (county level) datasets (ie, sociodemographic factors). For female gender, Hispanic and African-American race/ethnicity, and education level factors from the individual-level (NHANES) data, summary characteristics are expressed in terms of percent of total sample; not all summary statistics could be calculated. Similarly, for household income from the individual-level data, values were collected and stored as ranges of income; summary statistics could not be calculated. Finally, for county-level median household income, variables were normalized and scaled to have a maximum value of 100.
*P<0.05.
†P<0.001.
AUROC, area under the receiver operating characteristic; CHR, county health rankings; DM, diabetes mellitus; NHANES, national health and nutrition examination survey.