A longitudinal analysis of diet quality scores and the risk of incident depression in the SUN Project

Table 4 Risk of depression (HR and 95 % CI)^a for the quintiles of the residuals of z-Pro-vegetarian Dietary Pattern and z-Alternative Healthy Eating Index-2010 on the z-Mediterranean Diet Score

z-Pro-vegetarian Dietary Pattern	Q1	Q2	Q3	Q4	Q5
Median	−1.01	−0.41	0.02	0.46	1.08
Cases	251	193	224	188	195
Person-years	27,451	26,224	27,173	25,535	24,863
Baseline residual	1 (ref.)	0.79 (0.66–0.96)	0.89 (0.74–1.06)	0.80 (0.66–0.97)	0.84 (0.69–1.02)
Repeated measures^b	1 (ref.)	0.82 (0.68–0.99)	0.88 (0.73–1.06)	0.79 (0.65–0.95)	0.82 (0.68–0.99)
z-Alternative Healthy Eating Index-2010	Q1	Q2	Q3	Q4	Q5
Median	−1.07	−0.43	0.01	0.43	1.07
Cases	252	217	190	180	212
Person-years	27,046	26,577	26,836	25,487	25,300
Baseline residual	1 (ref.)	0.86 (0.71–1.03)	0.74 (0.61–0.89)	0.72 (0.59–0.87)	0.85 (0.70–1.03)
Repeated measures^b	1 (ref.)	0.82 (0.68–0.99)	0.69 (0.57–0.83)	0.67 (0.55–0.81)	0.77 (0.64–0.93)

Abbreviations: CI confidence interval, HR hazard ratio, Q1-Q5 Quintile1-Quintile5
^aAdjusted for age, sex, body mass index, smoking, physical activity during leisure time, use of vitamin supplement, z scores for Mediterranean Diet Score, total energy intake and presence of several diseases at baseline (cardiovascular disease, type 2 diabetes, hypertension and dyslipidaemia)
^bRepeated measures. Cumulative average for dietary patterns (at baseline and after 10 years of follow-up). Energy intake, body mass index and prevalence of diseases were also updated. For Pro-vegetarian Dietary Pattern, alcohol intake was also updated

ISSN: 1741-7015