Table 3.

Multivariate regression analysis of OBS and the risk of NAFLD.

	Model 1 OR (95% CI), P	Model 2 OR (95% CI), P	Model 3 OR (95% CI), P
OBS	0.960 (0.950, 0.971) <0.0001	0.945 (0.933, 0.957) <0.0001	0.947 (0.934, 0.960) <0.0001
OBS Quartile
Q1	ref.	ref.	ref.
Q2	0.992 (0.807, 1.220) 0.940	0.841 (0.660, 1.072) 0.165	0.801 (0.616, 1.042) 0.101
Q3	0.839 (0.676, 1.042) 0.115	0.688 (0.545, 0.870) 0.002	0.696 (0.541, 0.895) < 0.0001
Q4	0.442 (0.348, 0.561) < 0.0001	0.342 (0.258, 0.454) < 0.0001	0.352 (0.260, 0477) < 0.0001
p for trend	<0.0001	<0.0001	<0.0001
OBS Dietary	0.970 (0.958, 0.982) < 0.0001	0.956 (0.942, 0.970) < 0.0001	0.957 (0.942, 0.973) <0.0001
OBS Dietary Quartile
Q1	ref.	ref.	ref.
Q2	1.020 (0.840, 1.241) 0.836	0.890 (0.703, 1.127) 0.336	0.802 (0.614,1.050) 0.111
Q3	0.908 (0.744,1.107) 0.339	0.751 (0.604, 0.934) 0.011	0.763 (0.593, 0.981) 0.037
Q4	0.568 (0.449, 0.718) < 0.0001	0.453 (0.341, 0.602) < 0.0001	0.446 (0.330, 0.604) < 0.001
p for trend	<0.0001	<0.0001	<0.0001
OBS Lifestyle	0.691 (0.656, 0.727) < 0.0001	0.676 (0.644, 0.709) < 0.0001	0.691 (0.656, 0.728) < 0.0001
OBS Lifestyle Quartile
Q1	ref.	ref.	ref.
Q2	0.766 (0.597, 0.98) 0.037	0.762 (0.584, 0.994) 0.0466	0.780 (0.596, 1.020) 0.071
Q3	0.458 (0.365, 0.574) < 0.0001	0.430 (0.343, 0.540) < 0.0001	0.460 (0.366, 0.579) < 0.0001
Q4	0.226 (0.175, 0.291) < 0.0001	0.212 (0.163, 0.275) < 0.0001	0.226 (0.171, 0.299) < 0.0001
p for trend	<0.0001	<0.0001	<0.0001

OBS, oxidative balance score; NAFLD, nonalcoholic fatty liver disease; OR, odds ratio; 95% CI, 95% confidence interval; CVD, cardiovascular disease. Model 1 was an unadjusted model, model 2 adjusted for age, sex, race, marital status, education level, and daily energy intake, and model 3 was adjusted for age, sex, race, marital status, education level, daily energy intake, diabetes, hypertension, and CVD.