Table 4 Subgroup analyses for the association between dietary diversity and anemia among 6 To 18 years old children and adolescents
| Â | Number of effect sizes | WMD (95% CI) | P effect | P within | I2 (%) | P between |
|---|---|---|---|---|---|---|
Continent (Africa vs. Asia) |  |  |  |  |  |  < 0.001 |
 Africa | 6 | 1.61 (1.10, 2.36) | 0.015 |  < 0.001 | 81.6% |  |
 Asia | 4 | 2.51 (0.88, 7.20) | 0.086 |  < 0.001 | 94.5% |  |
 Type of anemia |  |  |  |  |  |  < 0.001 |
 Overall anemia | 7 | 2.49 (1.12, 2.78) |  < 0.001 |  < 0.001 | 83.2% |  |
 Iron deficiency anemia | 3 | 1.14 (1.05, 1.38) | 0.043 |  < 0.001 | 93.3% |  |
Sex | Â | Â | Â | Â | Â | 0.001 |
 Both (girls and boys) | 6 | 1.39 (1.08, 1.95) | 0.038 |  < 0.001 | 85.3% |  |
 Girls | 4 | 2.54 (1.15, 2.86) | 0.001 |  < 0.001 | 88.37% |  |
Bias | Â | Â | Â | Â | Â | 0.001 |
 Some concerns | 2 | 1.53 (1.09, 2.12) | 0.01 |  < 0.001 | 84% |  |
 High or very high bias | 8 | 2.65 (1.17, 3.12) |  < 0.001 |  < 0.001 | 91.6% |  |