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Table 1 Criteria list for the assessment of study quality, modified from Lievense et al[15, 16]

From: The association between diet quality, dietary patterns and depression in adults: a systematic review

Item

Criteria

C/CC/CS

Study population

1

Selection at uniform point

C/CC/CS

2

Cases and controls drawn from the same population

CC

3

Participation rate >80% for cases/cohort

C/CC

4

Participation rate >80% for controls

CC

Assessment of risk factor

5

Exposure assessment blinded

C/CC/CS

6

Exposure measured identically for cases and controls

CC

7

Exposure assessed according to validated measures

C/CC/CS

Assessment of outcome

8

Outcome assessed identically in studied population

C/CC/CS

9

Outcome reproducibly

C/CC/CS

10

Outcome assessed according to validated measures

C/CC/CS

Study design

11

Prospective design used

C/CC

12

Follow-up time ≥12 months

C

13

Withdrawals <20%

C

Analysis and data presentation

14

Appropriate analysis techniques used

C/CC/CS

15

Adjusted for at least age, and gender

C/CC/CS

  1. C = applicable to cohort studies, CC = applicable to case-control studies, CS = applicable to cross-sectional.