Table 2.

Variability in bruxism (sleep and awake) prevalence: a subgroup analysis by continent.

Continent	k	Proportion	CI 95%	τ2	Q	I2
Europe	29	0.22	0.18–0.27	0.52	2023.04	98.6%
North America	8	0.29	0.16–0.47	1.22	3041.78	99.8%
South America	56	0.25	0.21–0.29	0.74	2580.68	97.9%
Asia	43	0.19	0.15–0.24	1.03	12,177.51	99.7%

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