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. 2020 Feb 8;30(1):1–24. doi: 10.1007/s11065-020-09426-8

Table 6.

Risk of bias for longitudinal prospective studies.

Study Selection Comparability Outcome Total/9
Representativeness of the exposed cohort Selection of the non-exposed cohort Ascertainment of exposure Demonstration that outcome of interest was not present at start of study Controls for most important factor Controls for any additional factor Assessment of outcome Was follow-up long enough for outcomes to occur Adequacy of follow up of cohorts
Hack 2019 6
Ljungberg 2016 6
Wilson 2015 6
Yeung 2014 3
Zahodne 2014 5

A maximum of 9 stars can be given to each study