Table 4.

Linear regression models for depression score (n = 1297) (weighted).

Focal measure	Model 1		Model 2		Model 3
	β	SE	β	SE	β	SE
Low neighborhood  quality	0.37***	0.07	0.27**	0.08	0.22**	0.08
Fair or poor sleep  quality					0.63***	0.06
Sobel test of mediation: z-score = 2.43, p = 0.01
% Explained by addition of sleep quality = 19%

^**p < 0.01.

^***p < 0.001.

Note: Model 1 adjusts only for neighborhood quality. Model 2 adds in adjustment of sociodemographic and health factors, including age, race, education, gender, weight category, marital status, smoking history, annual household income. Model 3 adds in adjustment for fair or poor sleep quality.