Central obesity and nonalcoholic fatty liver disease risk after adjusting for body mass index

Table 3 Further analyses after adding several studies

Covariates	Subgroup	n of studies	OR(95%CI)	P of Q	I2	Inter-studyP value	UnivariateP value	MultivariateP value
Per-unit increase in waist circumference
Region	East	15	1.089 (1.057-1.122)	0.000	94.1	0.001	0.180	0.145
	West	5	1.040 (1.028-1.052)	0.149	40.8
Design	c-s	14	1.067 (1.042-1.193)	0.000	94.6	0.010	0.734	0.968
	Others	6	1.076 (1.049-1.103)	0.140	39.8
Adjusted	Yes	11	1.059 (1.038-1.081)	0.000	82.9	0.806	0.393	/
(> 3 factors)	No	9	1.101 (1.055-1149)	0.000	95.9
Adjusting for BMI	Yes	14	1.064 (1.040-1.089)	0.000	84.8	0.000	0.649	0.918
	No	6	1.086 (1.046-1.127)	0.000	95.3
Excluding ALD	Yes	16	1.079 (1.051-1.107)	0.000	90.0	0.000	0.603	0.869
	No	4	1.056 (1.022-1.093)	0.000	93.8
High vs low category of waist circumference
Region	East	11	2.687 (2.018-3.579)	0.000	74.4	0.000	0.545	0.934
	West	5	3.098 (2.005-4.785)	0.000	83.3
Design	c-s	12	2.471 (1.958-3.119)	0.000	72.3	0.000	0.015	0.078
	Other	4	5.212 (2.121-12.807)	0.858	0.0
Adjusted	Yes	10	3.002 (2.268-3.973)	0.000	73.1	0.000	0.459	/
(> 3 factors)	No	6	2.840 (2.184-3.691)	0.000	75.2
Adjusting for BMI	Yes	10	2.492 (1.898-3.271)	0.002	65.8	0.000	0.221	0.591
	No	6	3.281 (2.308-4.664)	0.000	79.5
Excluding ALD	Yes	12	2.856 (2.115-3.855)	0.000	74.9	0.000	0.910	1.000
	No	4	2.794 (1.716-4.549)	0.000	89.5