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Vote counting based on the direction of effect between cadmium concentration and red blood cell parameters.
| Reference | Study | Sample size | Study quality |
HB (n = 2) |
|---|---|---|---|---|
| (28) | Kordas et al. 2010 | 222 | Poor | ▴ |
| (37) | Nassef et al. 2014 | 90 | Poor | ▾ |
| Proportion of negative effects (95%CI) | 0.500 (0.061, 0.939) |
HB, hemoglobin; CI, confidence interval.
▴, positive relationship; ▾, negative relationship.
