Table 3 Risk of depression (HR and 95 % CI)^a according to the adherence to quintiles of different diet quality scores

Mediterranean Diet Score

0–<3

3–<4

4–<5

5–<6

6–9

P for trend

 Cases

221

191

212

200

227

 Person-years

22,560

25,206

27,338

25,812

30,330

 Crude rates/10^{3 b}

9.8 (8.6–11.2)

7.6 (6.5–8.7)

7.8 (6.7–8.9)

7.7. (6.7–8.9)

7.5 (6.5–8.5)

 Baseline

1 (ref.)

0.74 (0.61–0.90)

0.76 (0.63–0.92)

0.74 (0.61–0.90)

0.70 (0.58–0.85)

0.002

 Repeated measures^c

1 (ref.)

0.79 (0.65–0.96)

0.76 (0.62–0.92)

0.80 (0.66–0.97)

0.84 (0.69–1.02)

0.001

Pro-vegetarian Dietary Pattern

Q1

Q2

Q3

Q4

Q5

 Median

30

34

36

39

43

 Cases

319

224

136

183

189

 Person-years

34,090

27,862

20,032

24,584

24,677

 Crude rates/10^{3 b}

9.4 (8.4–10.4)

8.0 (7.0–9.2)

6.8 (5.7–8.0)

7.4 (6.4–8.6)

7.7 (6.6–8.8)

 Baseline

1 (ref.)

0.83 (0.70–0.99)

0.70 (0.57–0.86)

0.76 (0.63–0.91)

0.78 (0.64–0.93)

0.003

 Repeated measures^c

1 (ref.)

0.88 (0.74–1.04)

0.52 (0.43–0.64)

0.68 (0.57–0.82)

0.74 (0.61–0.89)

<0.001

Alternative Healthy Eating Index-2010

Q1

Q2

Q3

Q4

Q5

 Median

46

52

58

64

71

 Cases

282

197

229

160

183

 Person-years

30,175

24,041

30,488

21,979

24,564

 Crude rates/10^{3 b}

9.3 (8.3–10.5)

8.2 (7.1–9.4)

7.5 (6.6–8.5)

7.3 (6.2–8.5)

7.4 (6.4–8.6)

 Baseline

1 (ref.)

0.84 (0.70–1.01)

0.77 (0.64–0.90)

0.73 (0.60–0.88)

0.72 (0.59–0.88)

<0.001

 Repeated measures^c

1 (ref.)

0.68 (0.57–0.82)

0.75 (0.63–0.90)

0.55 (0.46–0.67)

0.60 (0.49–0.72)

<0.001