Table 4 Newcastle-Ottawa Quality Assessment Form for Cohort Studies
Study | Renkema et al. 2011 [41] | Farronato et al. 2014 [42] | Kocher et al. 2019 [43] | |
|---|---|---|---|---|
Selection | Representativeness of the exposed cohort | 1 | 0 – not properly described | 1 |
Selection of the non-exposed cohort | 0 | 0 | 1 | |
Ascertainment of exposure | 1 | 1 | 1 | |
Demonstration that outcome of interest was not present at start of study | 1 | 1 | 1 | |
Comparability | Comparability of cohorts on the basis of the design or analysis controlled for confounders | 0 | 0 | 2 |
There was only one cohort group, which was evaluated referring to different factors. | There was only one cohort group, which was evaluated referring to different factors. | The data collection and clinical evaluation were the same. | ||
Outcome | Assessment of outcome | 1 | 1 | 1 |
Was follow-up long enough for outcomes to occur | 1 | 1 | 1 | |
Adequacy of follow-up of cohorts | 1 | 1 | 1 | |
Total= | 6 | 5 | 9 | |