SIGN Cohort study checklist73
SIGN – Scottish Intercollegiate Guideline Network
aRating: “Yes” = 1, “No” or unable to tell from the article = 0
bScoring: Sum of items – 12–14 high quality, low risk of bias;
9–11 acceptable, moderate risk of bias; 6–8 low quality, high risk of bias; <6 unacceptable quality.