Table 1.

Prevalence Estimates of Nonalcoholic Fatty Liver Disease

Classification	Group	NAFLD Prevalence in Group	Notes
Geographic	General population	6%‐33%
	North America	11%‐46%
	Europe	4%‐49%	Incidence estimate: 29 per 100 000 person‐years
	South America	27%‐35%
	Asia	15%‐44%	Incidence estimate: 31–86 per 1000 person‐years
	Saudi Arabia	15%‐55%
	Africa	9%‐20%
Diagnostic testing	Histology	20%‐51%
	Ultrasonography	17%‐46%	Most readily available test but underestimates true prevalence
	Magnetic resonance spectroscopy	31%
	Abnormal aminotransferase levels	7%‐11%	Up to 79% of patients with NAFLD have normal aminotransferase levels
High‐Risk Populations	Hispanic race	45%	Whites also higher prevalence rate than blacks (33% and 24%, respectively)
	Obesity	Up to 90%	51% with NAFLD have obesity
	Diabetes mellitus	69%	30%‐50% with diabetes have NAFLD
	Dyslipidemia	50%	Up to 90% with dyslipidemia have NAFLD