Table 2.
Newcastle-Ottawa Scale scores of included prospective cohort studies
| Studies | Selection | Comparability | Outcome | Scores | |||||
|---|---|---|---|---|---|---|---|---|---|
| A | B | C | D | E | F | G | H | ||
| Confalonieri et al.[15] | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 8 |
| Parratte et al.[19] | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 8 |
| Biazzo et al.[14] | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 7 |
| Deng et al.[16] | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 8 |
| Garner et al.[24] | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 8 |
| Siddharth et al.[23] | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 7 |
A: representativeness of the exposed cohort; B: selection of the non-exposed cohort; C: ascertainment of exposure; D: demonstration that
outcome of interest was not present at start of study; E: comparability of cohorts on the basis of the design or analysis; F: assessment of
outcome; G: was follow-up long enough for outcomes to occur; H: adequacy of follow up of cohorts