Table 4.

Mediation analysis of CRP in the association between dietary niacin intake and suicidal ideation

Independent variable	Mediator	Total effect		Indirect effect		Direct effect		Proportion mediated, %
		Coefficient (95% CI)	P value	Coefficient (95% CI)	P value	Coefficient (95% CI)	P value
Niacin intake	CRP	−0.0257 (−0.0481, −0.011)	< 0.001	−0.0009 (−0.0015, −0.0003)	0.006	−0.0248 (−0.0471, −0.0102)	< 0.001	3.6

Gender, age, race, drinking, BMI, smoking, physical activities, CHD, hyperlipidemia, stroke, PIR, education level, marital status, albumin, creatinine, depression disorder, and cancer were adjusted