Table 2.

Social media posting and checking frequency and daytime sleepiness (N=4153).

Predictors	Pediatric Daytime Sleepiness Scale
	Estimate, B (95% CI)	P valuea
Intercept	12.49 (12.21 to 12.77)	<.001
Gender (1)b	1.07 (0.68 to 1.46)	<.001
Age	−0.26 (−0.39 to −0.13)	<.001
Phone agec	−0.01 (−0.10 to 0.07)	.76
Social media postingd	0.70 (0.63 to 0.78)	<.001
Social media checkingd	0.76 (0.68 to 0.84)	<.001

^aStatistically significant (P<.05).

^bGender: 0 (female) and 1 (male).

^cPhone age: parent-reported age of adolescent first smartphone.

^dSocial media posting and checking reflect frequency on a daily basis. Models were conducted separately, with covariate estimates similar across models.