Table 4 Pooled estimate of the standardized mean difference of hematological parameters between case and control groups
Index | Number of evidence | Sample size case | Sample size control | Pooled estimate result | Publication Bias total (Egger test) | Sensitivity analysis result (Yes, No)a | Heterogeneity (I−square), % | ||
|---|---|---|---|---|---|---|---|---|---|
SMD (95% CI SMD) | Significant association of between group (Yes, No) | β | P-value | ||||||
B12 | 11 | 1029 | 1024 | -0.52(-0.89, -0.14) | Yes | -4.28 | 0.129 | No | 93.6 |
Ferritin | 7 | 428 | 412 | -0.20(-0.51, 0.11) | No | -1.21 | 0.600 | No | 75.6 |
Folic acid | 6 | 629 | 617 | -0.42(-0.95, 0.11) | No | -5.15 | 0.199 | No | 94.2 |
HB | 4 | 663 | 685 | -0.58(-0.90, -0.27) | Yes | 1.58 | 0.754 | No | 85.1 |
Iron | 5 | 465 | 414 | 0.01(-0.12, 0.15) | No | 2.29 | 0.215 | No | 0 |
Zinc | 4 | 150 | 147 | -0.33(-0.81, 0.14) | No | -4.45 | 0.255 | No | 72.3 |