Table 2.
Scoring of the quality of articles by authors using The Newcastle-Ottawa Quality Assessment tool.
| Study | Selection |
Comparability |
Outcome |
Total Score | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Quality assessor | Representativeness of sample (∗, ∗) | Sample size (∗) | Non respondents (∗) | Ascertainment (∗∗) | Study controls for most important factor (∗) | The study control for any additional factor (∗) | Assessment of the outcome (∗) | Statistical test (∗) | ||
| Chirstopher kim et al. | SK | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 7 |
| YW | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| AS | 0 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | ||
| EA | 1 | 2 | 1 | 1 | 0 | 1 | 1 | 1 | ||
| MM | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| Pawel Wiechno et al. | SK | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 8 |
| YW | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| AS | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| EA | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| MM | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| Rannan Tal et al | SK | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 7 |
| YW | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| AS | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| EA | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| MM | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | ||
| Ferancesco Pallotti et al. | SK | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 8 |
| YW | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| AS | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| EA | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| MM | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| Masahiro Kurobe et al. | SK | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 7 |
| YW | 0 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | ||
| AS | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | ||
| EA | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| MM | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| Jakob E. Lackner et al | SK | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 8 |
| YW | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| AS | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| EA | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| MM | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| Alv A. Dahl et al | SK | 1 | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 6 |
| YW | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | ||
| AS | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | ||
| EA | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | ||
| MM | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 0 | ||
| Gerald Puhse et al | SK | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 6 |
| YW | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | ||
| AS | 1 | 1 | 0 | 1 | 1 | 0 | 1 | 1 | ||
| EA | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | ||
| MM | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 0 | ||
| P. Rossen et al | SK | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 7 |
| YW | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 0 | ||
| AS | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | ||
| EA | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| MM | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| Uros Bumbasirevic et al | SK | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 7 |
| YW | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| AS | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | ||
| EA | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | ||
| MM | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| K. Dimitropoulos et al | SK | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 7 |
| YW | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| AS | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | ||
| EA | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | ||
| MM | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | ||
| Paolo Capogrosso et al | SK | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 6 |
| YW | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | ||
| AS | 1 | 0 | 1 | 1 | 1 | 1 | 0 | 1 | ||
| EA | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| MM | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 0 | ||
| Mikkel bandak et al | SK | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 8 |
| YW | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| AS | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| EA | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| MM | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| Sarah L. Kerns, et al | SK | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 8 |
| YW | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| AS | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| EA | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | ||
| MM | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |||