TABLE 4.
OHAT Risk of Bias Assessment for Meta-Analyzed Studies
| Study | Selection bias |
Confounding and effect modification |
Attrition bias |
Exposure misclassification |
Outcome misclassification |
Measurement bias |
Other threats to internal validity |
Overall risk of bias |
|---|---|---|---|---|---|---|---|---|
| Azizova 2020 (Mayak)(60) | + | − | ++ | ++ | + | ++ | + | * |
| Boice 2014 (Mound) (72) | + | − | ++ | + | + | + | + | ** |
| Boice 2022 (Los Alamos) (54) | + | − | ++ | + | + | + | + | ** |
| Boice 2022 (MRW) (55) | + | − | ++ | + | + | + | + | ** |
| Boice 2022 (Nuclear Power Plants) (57) | + | − | ++ | + | − | + | + | ** |
| Boice, Quinn 2022 (IR) (26) | + | − | ++ | + | + | + | + | ** |
| Gillies 2017 (INWORKS) (62) | − | − | − | − | + | − | + | ** |
| Golden 2021 (Mallinckrodt) (56) | + | − − | ++ | + | + | + | + | ** |
Abbreviations key: ++ = Definitely low risk; + = Probably low risk; − = Probably high risk; − = Definitely high risk
* =
Low
** =
Medium
*** =
High.