Prevalence of sleep disturbance among adolescents with substance use: a systematic review and meta-analysis

Table 2 Prevalence of sleep disturbances grouped by substance use

	N Study	Prev. (%)	95% CI Lower limit	Upper limit	Heterogeneity Q value	p Value	I²
Overall	38	28	0.214	0.363	11660.186	<0.001	99.683
Alcohol	15	29	0.175	0.445	4501.860	< 0.001	99.689
Coffee	3	23	0.082	0.490	252.011	< 0.001	99.206
Marijuana	3	37	0.096	0.770	741.531	< 0.001	99.819
Smoking	17	28	0.191	0.392	4991.147	< 0.001	99.679

ISSN: 1753-2000