Table 2.
Vote counting based on the direction of the relationship between mercury concentration and red blood cell parameters.
| Reference | Study | Sample size | Study quality |
RBC count
(n = 1) |
HCT
(n = 2) |
HB
(n = 3) |
MCHC
(n = 1) |
|---|---|---|---|---|---|---|---|
| (52) | Kempton et al. 2021 | 16 | Good | ▾ | |||
| (53) | Manjarres-Suarez and Olivero-Verbel, 2020 | 194 | Good | ▾ | ▾ | ▾ | ▾ |
| (54) | Weinhouse et al. 2017 | 83 | Good | ▾ | |||
| (55) | Cho, 2021 | 1096 | Fair | ▴ | |||
| Proportion of negative effects (95%CI) | |||||||
| All studies | 1.000 (0.147, 1.000) |
0.500 (0.061, 0.939) |
1.00 (0.464, 1.000) |
1.000 (0.147, 1.000) |
|||
| Only good quality studies | 1.000 (0.147, 1.000) |
1.000 (0.147, 1.000) |
1.00 (0.464, 1.000) |
1.000 (0.147, 1.000) |
|||
RBC, red blood cell; HCT, hematocrit; HB, hemoglobin; MCHC, mean corpuscular hemoglobin concentration; CI, confidence interval.
▴, positive relationship; ▾, negative relationship.