Table 4.

Association of habitual nighttime sleep duration with post-COVID among those who received two mRNA vaccine doses and exhibited persistent sleep duration patterns between before the pandemic and during the pandemic.

Nighttime sleep duration	n	Post-COVID, n (%)	OR [95%-CI]
			Unadjusted	Adjusteda
6–9 h	4512	868 (19.2)	1 [ref]	1 [ref]
<6 h	564	143 (25.4)	1.43 [1.16, 1.75]	1.59 [1.24, 2.03]
>9 h	92	30 (32.6)	2.03 [1.31, 3.16]	1.18 [0.70, 1.97]

^aAdjusted for: participants’ age, gender, ethnicity, test positivity status, time elapsed since first mRNA vaccination, smoking status, weekly alcohol consumption, educational level, marital status, living area, the weekly physical activity level score, presence of obesity/hypertension/diseases of the circulatory system/diabetes mellitus/diseases of respiratory system/neuropsychiatric disorders/other diseases.