238 Chapter 10 2. Study controls for any additional factor. a. Yes (*) b. No Outcome 1. Assessment of outcome a. Independent blind assessment (*) b. Record linkage (*) c. Self-report d. No description 2. Was follow-up long enough for outcomes to occur a. Yes (*) b. No 3. Adequacy of follow up of cohorts a. Complete follow up (all subjects accounted for) (*) b. Subjects lost to follow up unlikely to introduce bias (≤10% lost to follow-up, or description provided of those lost) (*) c. Follow up rate < 90% and no description of those lost d. No statement Thresholds used to convert the Newcastle-Ottawa scale to categories (good, fair, and poor): Good quality/low risk of bias: 3 or 4 stars in selection domain AND 1 or 2 stars in comparability domain AND 2 or 3 stars in outcome/exposure domain Fair quality/medium risk of bias: 2 stars in selection domain AND 1 or 2 stars in comparability domain AND 2 or 3 stars in outcome/exposure domain. Poor quality/high risk of bias: 0 or 1 star in selection domain OR 0 stars in comparability domain OR 0 or 1 stars in outcome/exposure domain
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