Effect estimates on outcomes stratified by fortification status of meals.

Table 2: Effect estimates on outcomes stratified by fortification status of meals.

Outcome or Subgroup	Studies	Participants	Statistical Method	Effect Estimate
1.1 Haemoglobin Level	8	2551	Mean Difference (IV, Random, 95% CI)	0.22 [0.01, 0.43]
1.1.1 Fortified meals	6	1870	Mean Difference (IV, Random, 95% CI)	0.33 [0.11, 0.55]
1.1.2 Unfortified meals	2	681	Mean Difference (IV, Random, 95% CI)	-0.06 [-0.30, 0.17]
1.2 Serum Ferritin Level	6	1627	Mean Difference (IV, Random, 95% CI)	7.43 [0.02, 14.84]
1.2.1 Fortified meals	5	1404	Mean Difference (IV, Random, 95% CI)	5.74 [-2.18, 13.67]
1.2.2 Unfortified meals	1	223	Mean Difference (IV, Random, 95% CI)	20.00 [5.30, 34.70]
1.3 Iron intake	9	1187	Mean Difference (IV, Random, 95% CI)	1.88 [0.95, 2.81]
1.3.1 Fortifiied meals	1	106	Mean Difference (IV, Random, 95% CI)	5.10 [4.21, 5.99]
1.3.2 Unfortified meals	8	1081	Mean Difference (IV, Random, 95% CI)	1.12 [0.41, 1.84]