Table 2.

Changes in Center for Epidemiological Studies–Depression, Social Function Use Intensity, Entertainment Function Use Intensity, and psychosocial factors scores from baseline to follow-up.

Variables			Baseline		Follow-up		Mean difference (95% CI)		P value for time
Center for Epidemiological Studies–Depression score			15.1 (9.5)		15.6 (9.5)		0.48 (0.22, 0.74)		<.001
Online social networking use intensity
	Social Function Use Intensity	18.4 (8.3)		18.1 (8.4)		–0.31 (–0.55, –0.08)		.01
	Entertainment Function Use Intensity	8.2 (3.1)		7.8 (3.2)		–0.46 (–0.56, –0.36)		<.001
Psychosocial factors
	Friendship quality	19.0 (3.4)		18.8 (3.4)		–0.17 (–0.27, –0.08)		.001
	Perceived family support	20.4 (5.6)		20.2 (5.4)		–0.21 (–0.37, –0.05)		.009
	Perceived friend support	42.0 (10.1)		40.7 (10.5)		–1.31 (–1.63, –1.00)		<.001
	Father–adolescent conflict	12.9 (5.8)		12.7 (5.8)		–0.25 (–0.45, –0.05)		.02
	Mother–adolescent conflict	14.5 (6.3)		14.6 (6.7)		0.15 (–0.08, 0.37)		.21
	Social nonconfidence	12.8 (3.1)		12.6 (3.1)		–0.22 (–0.33, –0.12)		<.001