Egg consumption reduces the risk of depressive symptoms in the elderly: findings from a 6-year cohort study

BMC Psychiatry

Table 2 Longitudinal association between egg consumption and risk of depressive symptoms

Egg consumption	Total	Cases	Model 1^a		Model 2^b		Model 3^c		Model 4^d
Egg consumption	Total	Cases	RR (95% CI)	P value	RR (95% CI)	P value	RR (95% CI)	P value	RR (95% CI)	P value
None or not weekly	2826	629	1.00 (Ref)	–	1.00 (Ref)	–	1.00 (Ref)	–	1.00 (Ref)	–
< 3 eggs/week	2565	393	0.62 (0.55–0.71)	< 0.01	0.65 (0.57–0.73)	< 0.01	0.66 (0.58–0.74)	< 0.01	0.70 (0.62–0.80)	< 0.01
≥3 eggs/week	2898	363	0.50 (0.44–0.57)	< 0.01	0.53 (0.46–0.60)	< 0.01	0.55 (0.48–0.63)	< 0.01	0.62 (0.54–0.71)	< 0.01
P for trend			< 0.01		< 0.01		< 0.01		< 0.01
RR for 1 egg/week			0.93 (0.90–0.96)	< 0.01	0.94 (0.91–0.97)	< 0.01	0.94 (0.92–0.97)	< 0.01	0.96 (0.93–0.99)	< 0.01

Abbreviations: RR Relative risk, CI Confidence interval, Ref Reference
^aNo variable was adjusted in model 1
^bAdjusted for age, gender, race, education level, marital status, and family income
^cAdjusted for the same covariates in model 2, plus body mass index, hypertension, diabetes, coronary heart disease, smoking, alcohol drinking, exercise, and tea drinking
^dAdjusted for the same covariates in model 3, plus vegetable intake, fruit intake, red meat intake, and fish intake

ISSN: 1471-244X