Table 3 Meta-analysis results

Zinc Alone vs. Placebo

6 Months:

MDI

4

591

-0.18 (−0.39 to 0.02)^a

I² = 37.4%, Χ² = 4.79

PDI

4

591

0.17 (−0.20 to 0.55)

I² = 80.8%, Χ² = 15.60

12 Months:

MDI

6

977

-0.08 (−0.36 to 0.19)

I² = 77.4%, Χ² = 22.14

PDI

6

977

0.30 (−0.24 to 0.83)

I² = 94.00%, Χ² = 80.23

Zinc with Iron vs. Iron

6 Months:

MDI

2

359

0.09 (−0.11 to 0.30)

I² = 0.00, Χ² = 0.01

PDI

2

359

0.07 (−0.14 to 0.28)

I² = 0.00, Χ² = 0.42

12 Months:

MDI

4

790

-0.03 (−0.17 to 0.11)

I² = 0.00, Χ² = 1.02

PDI

4

790

0.01 (−0.24 to 0.26)

I² = 66.40, Χ² = 8.94