Outcomes | No. of studies | No. of subjects | Age range | Effect size (95% CI) | I 2 Statistic |
---|---|---|---|---|---|
Cognitive score | 4 | 479 | < 10 years | WMD −7.23 (−9.20; −5.26) | 8.7% |
3 | 407 | < 10 years | RR 3.59 (1.55; 8.32)a | 0.0% | |
Motor score | 2 | 152 | < 10 years | WMD −6.45 (−9.64; −3.27) | 0.0% |
2 | 135 | < 10 years | RR 3.72 (1.32; 10.54)b | 0.0% |