Table 3.
Quality assessment of cohort studies.
| Study (authors, year) | Representativeness of the exposed cohort | Election of the non exposed cohort | Ascertainment of exposure | Demonstration that outcome of interest was not present at start of study | Comparability of cohorts on the basis of the design or analysis | Assessment of outcome | Was follow- up long enough for outcomes to | Adequacy of follow up of cohorts |
|---|---|---|---|---|---|---|---|---|
| Koichiro Kawano, 2020 | Yes | Yes | Yes | Yes | NA | Yes | Yes | Yes |
| Yong-Chan Ha 2010 | Yes | NA | Yes | Yes | NA | Yes | Yes | Yes |
| D. Morita, 2017 | Yes | NA | Yes | Yes | NA | Yes | Yes | Yes |
| Y. Hasegawa 1999 | Yes | NA | Yes | Yes | NA | Yes | Yes | Yes |
| Y.-C. Ha, 2010 | Yes | NA | Yes | Yes | NA | Yes | Yes | Yes |
| Y. Kubo 2016 | Yes | NA | Yes | Yes | NA | Yes | Yes | Yes |
| S. Sakano, 2003 | Yes | NA | Yes | Yes | NA | Yes | Yes | Yes |
| Michael A, 1989 | Yes | NA | NA | Yes | NA | Yes | Yes | Yes |
| Shin Onodera 2005, | Yes | NA | Yes | Yes | NA | Yes | Yes | Yes |
| N. Sugano, 1992 | Yes | NA | Yes | Yes | NA | Yes | Yes | Yes |
| K. Sonoda, 2015 | ||||||||
| Y. K. Lee 2017 | Yes | NA | Yes | Yes | NA | Yes | Yes | Yes |
| S. Iwasada, 1997 | Yes | NA | Yes | Yes | NA | Yes | Yes | Yes |
| YusukeOsawa, 2020 | Yes | NA | Yes | Yes | NA | Yes | Yes | Yes |
| Michio Hamanishi , 2014 | Yes | NA | Yes | Yes | NA | Yes | Yes | Yes |
| P. Grigoris, 1996 | Yes | NA | Yes | Yes | NA | Yes | Yes | Yes |
| W. Schneider2002 | Yes | NA | Yes | Yes | NA | Yes | Yes | Yes |
| W. H. C. Rijnen, 2005 | Yes | NA | Yes | Yes | NA | Yes | Yes | Yes |
| M. T. Dean, 1993 | Yes | NA | Yes | Yes | NA | Yes | Yes | Yes |