TABLE 7.
Summary of risk of bias assessment (H, high risk; U, unclear risk; L, low risk; NA, not applicable) of population salt intake and evaluation studies included in the present systematic review
| Author, year, and references | Type of studies | Selection bias: sampling | Selection bias: representativeness of sample underlying population | Performance bias: adjustment for confounders or exposure to other factors | Detection bias: reliability and validity of exposure and outcome assessment | Attrition bias: loss to follow‐up | Reporting bias: selective reporting | Other bias: |
|---|---|---|---|---|---|---|---|---|
| Alves et al 29 | Salt intake study | L | L | NA | H | L | L | L |
| Challa et al 31 | Salt intake study | L | L | NA | H | L | L | L |
| Charlton et al 49 | Salt intake study | H | H | NA | L | H | L | L |
| Charlton et al 48 | Salt intake study | H | H | NA | L | H | L | L |
| Derouiche et al 35 | Salt intake study | H | H | NA | L | L | L | L |
| Mizehoun‐Addisoda et al 26 | Salt intake study | U | H | NA | L | L | L | L |
| Prynn et al 34 | Salt intake study | H | H | NA | H | L | L | L |
| Queiroz et al 39 | Salt intake study | H | H | NA | L | L | L | L |
| Saeid et al 61 | Salt intake study | H | H | NA | L | H | L | L |
| Swanepoel et al 47 | Salt intake study | L | L | NA | L | L | L | L |
| Tayo et al 42 | Salt intake study | U | U | NA | L | L | L | L |
| Ware et al 50 | Salt intake study | U | H | NA | L | H | L | L |
| Wentzel‐Viljoen et al 46 | Evaluation Study | H | H | L | H | L | L | L |
Abbreviations: H, high; L, low; NA, unclear/not applicable.