Table 2. Quality assessment of cohort studies.
*(A), *(B), **(A+B): refer to 'Newcastle Ottawa Quality Assessment Scale for Cohort Studies' [7]
| Newcastle Ottawa Quality Assessment Scale for Cohort Studies | ||
| Karajamaki AJ, et al., 2015 | Targher G, et al., 2013 | |
| Selection | ||
| 1) Representativeness of cohort | *(A) | *(A) |
| 2) Selection of non-exposed cohort | *(A) | *(A) |
| 3) Ascertainment of exposure | *(A) | *(A) |
| 4) Demonstration that outcome of interest was not present at the start of the study | *(A) | *(A) |
| Comparability | ||
| 1) Comparability of cohorts on the basis of design or analysis | **(A+B) | **(A+B) |
| Outcome | ||
| 1) Assessment of outcome | *(B) | *(B) |
| 2) Was follow-up long enough for outcomes to occur? | *(A) | *(A) |
| 3) Adequacy of follow-up cohorts | *(A) | *(A) |
| Total Score | 9/9 | 9/9 |