Table 1.

Features of the 11 studies included in this meta-analysis

Study	Type of Study	Country	NAFLD patients with normal ALT (n)	Overall patients (n)	Diagnostic methods	NOS score
Mofrad et al.,200321	Retrospective	USA	51	386	Histology	7
Amarapurkar et al.,200422	Prospective	India	25	81	Histology	7
Fracanzani et al.,200823	Retrospective	Italy	63	458	Histology	7
Uslusoy et al.,200924	Retrospective	Turkey	9	34	Histology	7
Wong et al.,200925	Prospective	HongKong (China)	38	173	Histology	7
Verma et al.,201326	Retrospective	USA	56	222	Histology	7
McPherson et al.,201327	Retrospective	UK	70	305	Histology	7
Maximos et al.,201528	Prospective	USA	165	380	MRI	7
Umehara et al.,201814	Cross-sectional	USA	353	1616	Ultrasonography	NA
Sheng et al.,201813	Retrospective	China	69	212	Ultrasonography	7
Sun et al.,201915	Cross-sectional	China	75	217	Histology	NA

Abbreviation: CI Confidence interval