Table 1 Details of the results of the quality evaluation of the case-control study.
Study | Selection | Comparability | Exposure | Total scores | |||||
|---|---|---|---|---|---|---|---|---|---|
Adequate definition of cases | Representativeness of the cases | Selection of controls | Definition of controls | Control for important factors or additional factor | Ascertainment of exposure | The same method of ascertainment for cases and controls | Non-Response rate | ||
Boutron-Ruault et al. (2005) | ★ | ★ | ★ | ★ | ★★ | ★ | ★ | ★ | 9 |
Korpela et al. (1988) | ★ | ★ | ★ | ★ | ★ | ★ | 6 | ||
Chen et al. (2021) | ★ | ★ | ★ | ★ | ★ | ★ | ★ | 7 | |
TORII et al. (2019) | ★ | ★ | ★ | ★ | ★ | ★ | ★ | 7 | |
Reddy et al. (1977) | ★ | ★ | ★ | ★ | ★ | ★ | 6 | ||
Owen et al. (1986) | ★ | ★ | ★ | ★ | ★ | ★ | 6 | ||
Kaibara et al. (1983) | ★ | ★ | ★ | ★ | ★ | ★ | 6 | ||
Owen et al. (1987) | ★ | ★ | ★ | ★ | ★ | ★ | ★ | 7 | |
Meance et al. (2003) | ★ | ★ | ★ | ★ | ★ | ★ | ★ | ★ | 8 |
Owen et al. (1992) | ★ | ★ | ★ | ★ | ★ | ★ | 6 | ||
Hill et al. (1987) | ★ | ★ | ★ | ★ | ★ | ★ | 6 | ||
Breuer et al. (1986) | ★ | ★ | ★ | ★ | ★ | ★ | 6 | ||
Breuer et al. (1985) | ★ | ★ | ★ | ★ | ★ | ★ | 6 | ||
Murray et al. (1980) | ★ | ★ | ★ | ★ | ★ | ★ | 6 | ||
Weir et al. (2013) | ★ | ★ | ★ | ★ | ★ | ★ | ★ | ★ | 8 |
Hill et al. (1975) | ★ | ★ | ★ | ★ | ★ | ★ | 6 | ||
Hikasa et al. (1984) | ★ | ★ | ★ | ★ | ★ | ★ | 6 | ||
Tanida et al. (1984) | ★ | ★ | ★ | ★ | ★ | ★ | 6 | ||
Kok et al. (1999) | ★ | ★ | ★ | ★ | ★ | ★ | ★ | ★ | 8 |
