Trials Being Combined | No. of Trials | χ2 | df | P |
---|---|---|---|---|
All trials | 13 | 154.0 | 26 | 10–19 |
Low Zn dose (<75 mg/day) | 5 | 5.7 | 10 | 0.8 |
High Zn dose (>75 mg/day) | 8 | 148.3 | 16 | 10–22 |
Zn-acetate [21,22,25] | 3 | 107.7 | 6 | 10–20 |
not Zn-acetate [7,19,20,23,24] | 5 | 40.6 | 10 | 10–5 |