TABLE 3.

Weighted odds ratios (95% confidence intervals) of depression and different dietary fiber intake levels in different models.

Dietary fiber intake (mg/d)	Cases/participants	Non-adjusted model	Model 1	Model 2
Total fiber	1670/17866	0.97 (0.97∼0.98)	0.98 (0.97∼0.98)	0.99 (0.98∼0.99)
P-value		<0.001	<0.001	<0.001
Subgroups
Quartile 1	736/5,879	1.00 (Ref.)	1.00 (Ref.)	1.00 (Ref.)
Quartile 2	520/6,023	0.66 (0.59∼0.74)	0.68 (0.60∼0.76)	0.84 (0.74∼0.95)
Quartile 3	414/5,964	0.52 (0.46∼0.59)	0.58 (0.51∼0.66)	0.79 (0.67∼0.92)
P-trend		<0.001	<0.001	0.002

Data presented are ORs and 95% CIs.

Model 1: adjusted for age and gender.

Model 2: additionally adjusted for BMI, race/ethnicity, educational level, PIR, smoking status, alcohol consumption, diabetes, hypertension, and total daily energy intake.