Table 3.

Association between dietary niacin intake and depression in participants with extreme energy intake was not included

	OR (95% CI)
Quartile	No.	Model 1	P value	Model 2	P value	Model 3	P value
Niacin intake (mg/day)
Q1(≤15.97)	3940	1.00 (reference)		1.00 (reference)		1.00 (reference)
Q2(15.98–22.70)	3939	0.79(0.62,1.02)	0.07	0.81(0.63,1.02)	0.08	0.90(0.69,1.19)	0.48
Q3(22.71–31.86)	3939	0.58(0.44,0.76)	< 0.001	0.61(0.46,0.80)	< 0.001	0.77(0.56,1.04)	0.09
Q4(≥ 31.87)	3939	0.46(0.33,0.67)	< 0.0001	0.51(0.36,0.72)	< 0.001	0.65(0.44,0.97)	0.04
P for trend	-	< 0.0001	-	< 0.001	-	0.03	-

Model 1 was adjusted for energy

Model 2 was additionally adjusted for age and sex

Model 3 was adjusted for age, sex, race, marital status, education, family income, smoking, drinking, physical activity, BMI, hypertension, diabetes, energy, n-3 fatty acids, n-6 fatty acids, folate and zinc