Table 2.

Multinomial logistic regression models for morning–evening type, nocturnal sleep duration and morning–evening type nocturnal sleep duration combinations for a matched sample of Black and White participants (N = 2044).

	OR (95% CI)	p Value
Model 1: Morning–evening type
Morning	1.620 (1.336–1.964)	<.0001
Intermediate	REFERENCE
Evening	1.145 (0.847–1.548)	0.3791
Model 2: Nocturnal sleep duration
Short (≤6 h)	3.453 (2.846–4.190)	<.0001
Adequate (7–8 h)	REFERENCE
Long (≥9 h)	1.169 (0.768–1.781)	0.4666
Model 3: Morning–evening type/nocturnal sleep duration combinations
Morning type
Short sleep (≤6 h)	4.596 (3.381–6.248)	<.0001
Adequate sleep (7–8 h)	1.627 (1.260–2.102)	0.0002
Long sleep (≥9 h)	1.484 (0.736–2.992)	0.2700
Intermediate type
Short sleep (≤6 h)	3.676 (2.831–4.774)	<.0001
Adequate sleep (7–8 h)	REFERENCE
Long sleep (≥9 h)	1.425 (0.816–2.487)	0.2132
Evening type
Short sleep (≤6 h)	3.358 (2.171–5.194)	<.0001
Adequate sleep (7–8 h)	0.738 (0.467–1.166)	0.1928
Long sleep (≥9 h)	0.594 (0.119–2.961)	0.5247

OR: odds ratio; CI: confidence interval