Table 4.
Newcastle-Ottawa Quality Assessment Form for Cohort Studies
| Study | Selection* | Comparability† | Outcome* | Total Score | |||||
|---|---|---|---|---|---|---|---|---|---|
| Representativeness of the Exposed Cohort | Selection of the Nonexposed Cohort | Ascertainment of Exposure | Outcome of Interest Not Present at Start of the Study | Comparability of Cohorts on the Basis of the Design or Analysis | Assessment of Outcome | Follow-up Long Enough | Adequacy of Follow-up | ||
| Cordeiro et al13 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 8 |
| Sbitany et al14 | 1 | 1 | 1 | 1 | 2 | 1 | 0 | 1 | 8 |
| Chen et al15 | 1 | 1 | 1 | 1 | 2 | 1 | 0 | 1 | 8 |
| Cordeiro et al16 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 8 |
| Reish et al17 | 1 | 1 | 1 | 1 | 2 | 1 | 0 | 1 | 8 |
| Seth et al18 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 7 |
| Muresan et al19 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 8 |
| Elswick et al20 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 9 |
| Jagsi et al21 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 0 | 8 |
| Smith et al22 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 7 |
| Zhang et al23 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 8 |
| Lam et al11 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 8 |
| Naoum et al24 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 7 |
| Olinger et al25 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 0 | 8 |
*Maximum score is 2
†Maximum score is 1