Table 3.

Variability in sleep bruxism prevalence: a subgroup analysis by continent.

Continent	k	Proportion	CI 95%	τ2	Q	I2
Europe	35	0.21	0.18–0.26	0.49	3855.24	99.1%
North America	5	0.31	0.12–0.57	1.52	1575.75	99.7%
South America	54	0.23	0.19–0.28	0.75	2800.83	98.1%
Asia	46	0.19	0.15–0.23	0.71	10,727.90	99.6%

k—number of studies; CI 95%—confidence interval 95%.