Research Article
Association between Habitual Dietary Salt Intake and Risk of Gastric Cancer: A Systematic Review of Observational Studies
Table 2
The study quality scores of the studies included in meta-analysis.
| First author, year of publication (reference) | Objects selection | Comparability | Exposure/result | Total quality scores | Adequate definition/exposed cohort representat-iveness | Representativeness of cases/nonexposed cohort | Controls selection/exposure ascertainment | Controls definition/outcome not present | | Exposure ascertainment/outcome assessment | cases and controls ascertainment method/followup length | Nonresponse rate/adequate followup | |
| Campos, 2006 [12] | ⋆ | ⋆ | 0 | ⋆ | ⋆ ⋆ | ⋆ | ⋆ | 0 | 7 | Tsugane, 2004 [21] | ⋆ | ⋆ | ⋆ | ⋆ | ⋆ ⋆ | ⋆ | ⋆ | 0 | 8 | Peleteiro, 2011 [11] | ⋆ | ⋆ | ⋆ | ⋆ | ⋆ ⋆ | ⋆ | ⋆ | 0 | 8 | Pourfarzi, 2009 [13] | ⋆ | ⋆ | ⋆ | ⋆ | ⋆ ⋆ | ⋆ | ⋆ | 0 | 8 | Yang, 2011 [17] | ⋆ | ⋆ | ⋆ | ⋆ | ⋆ ⋆ | ⋆ | ⋆ | 0 | 8 | Shikata, 2006 [19] | 0 | ⋆ | ⋆ | ⋆ | ⋆ ⋆ | ⋆ | ⋆ | 0 | 7 | Ward, 1999 [15] | 0 | ⋆ | ⋆ | ⋆ | ⋆ ⋆ | ⋆ | ⋆ | 0 | 7 | Ngoan, 2002 [20] | 0 | ⋆ | ⋆ | ⋆ | ⋆ ⋆ | ⋆ | ⋆ | 0 | 7 |
Ramón et al., 1993 [14] | ⋆ | ⋆ | ⋆ | ⋆ | ⋆ ⋆ | ⋆ | ⋆ | 0 | 8 | Lee, 2003 [16] | ⋆ | ⋆ | ⋆ | ⋆ | ⋆ ⋆ | ⋆ | ⋆ | 0 | 8 | Kim, 2010 [18] | ⋆ | ⋆ | ⋆ | ⋆ | ⋆ ⋆ | ⋆ | ⋆ | 0 | 8 |
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