Secondhand Smoke Exposure, Restless Sleep, and Sleep Duration in Adolescents

Table 3

Associations between frequency of SHS exposure and sleep duration in a sample of adolescents (𝑁=1,466).

Overall SHS exposure in the past month	Nighttime sleep duration (hours); (Monday–Friday)	Nighttime sleep duration (hours); (Saturday-Sunday)
	𝐵 (95% CI)	𝐵 (95% CI)
Unadjusted	−0.09^†† (−0.04–−0.14)	−0.09^†† (−0.04–−0.14)
Full model^a	−0.06* (−0.01–−0.11)	−0.09^†† (−0.03–−0.14)

CI: confidence interval.
^aAdjusted for age, gender, ethnicity, family income, and smoking status (smoked in the past 30 days).
* 𝑃<0.05; ^†𝑃<0.01; ^††𝑃≤0.001.