TABLE 7.
Quality assessment Newcastle-Ottawa scale table for non-RCT studies.
| Studies | Represen-tativeness of the exposed cohort | Selection of the non-exposed cohort | Ascertain-ment of exposure | Demon-stration that outcome of interest was not present at start of study |
Compa-rability of cohorts on the basis of the design or analysis | Assessment of outcome | Was follow-up long enough for outcomes to occur |
Adequacy of follow up of cohorts |
Total |
| Quinlan et al. (29) | * | * | NR | * | * | * | NR | * | 6 |
| Scholpp et al. (24) | * | * | * | * | * | * | * | * | 8 |
| Nakahira et al. (10) | * | * | * | * | * | * | * | * | 8 |
| Bhargava et al. (26) | * | * | * | NA | * | * | * | NA | 6 |
| Evans et al. (20) | * | * | * | 3 | |||||
| Liu et al. (25) | * | NR | * | * | * | * | 5 | ||
| Serpa et al. (22) | * | * | NR | * | * | * | * | * | 7 |
| Dorward et al. (27) | * | * | * | * | * | * | * | * | 8 |
| Garramone et al. (11) | * | NR | * | * | * | 4 | |||
| Grazioli et al. (13) | * | NR | * | * | 3 | ||||
| Bos et al. (28) | * | * | Unclear | * | * | * | * | * | 7 |
| Blot et al. (14) | * | * | * | * | * | * | * | 7 | |
| Huang et al. (15) | * | * | * | * | * | * | * | * | 8 |
| Faust et al. (6) | * | * | * | * | * | * | * | * | 8 |
| Korsunov et al. (23) | * | NR | * | * | * | 4 | |||
| Hernández -Beeftink et al. (16) | * | * | * | * | * | * | 6 |
NR, not recorded. *One score.