Expressive L2 proximal vocabulary (expressing or producing words taught in the intervention) · second language (L2) learners up to six years of age
1 finding from 1 review
Expressive L2 distal vocabulary (expressing or producing words not taught in the intervention) · second language (L2) learners up to six years of age
1 finding from 1 review
Mean length of utterance (MLU) · second language (L2) learners up to six years of age
1 finding from 1 review
no estimate extracted
1 study · 1 participants
Moderate
L2 listening comprehension · second language (L2) learners up to six years of age
1 finding from 1 review
L2 narrative skills · second language (L2) learners up to six years of age
1 finding from 1 review
All‐cause mortality · children aged between 6 months and 5 years
Vitamin A supplementation leads to lower all‐cause mortality compared with placebo or usual care (high certainty).
1 finding from 1 review
Vomiting · children aged between 6 months and 5 years
Vitamin A supplementation probably leads to higher vomiting compared with placebo or usual care (moderate certainty).
1 finding from 1 review
Vitamin A deficiency · children aged between 6 months and 5 years
Vitamin A supplementation probably leads to lower vitamin A deficiency compared with placebo or usual care (moderate certainty).
1 finding from 1 review
Mortality due to diarrhoea · children aged between 6 months and 5 years
Vitamin A supplementation leads to lower mortality due to diarrhoea compared with placebo or usual care (high certainty).
1 finding from 1 review
Mortality due to measles · children aged between 6 months and 5 years
Vitamin A supplementation showed no clear difference in mortality due to measles compared with placebo or usual care (low certainty).
1 finding from 1 review
Mortality due to LRTI · children aged between 6 months and 5 years
Vitamin A supplementation showed no clear difference in mortality due to LRTI compared with placebo or usual care (low certainty).
1 finding from 1 review
Diarrhoea incidence Mean episodes per child per year · children aged between 6 months and 5 years
Vitamin A supplementation may leads to lower diarrhoea incidence Mean episodes per child per year compared with placebo or usual care (low certainty).
1 finding from 1 review
Measles incidence Mean episodes of measles per child per year · children aged between 6 months and 5 years
Vitamin A supplementation probably leads to lower measles incidence Mean episodes of measles per child per year compared with placebo or usual care (moderate certainty).
1 finding from 1 review
Incidence of LRTI · children aged between 6 months and 5 years
Vitamin A supplementation showed no clear difference in LRTI incidence Mean episodes per child per year compared with placebo or usual care (low certainty).
1 finding from 1 review
Bitot's spots incidence · children aged between 6 months and 5 years
Vitamin A supplementation probably leads to lower bitot's spots incidence compared with placebo or usual care (moderate certainty).
1 finding from 1 review
Night blindness incidence · children aged between 6 months and 5 years
Vitamin A supplementation probably leads to lower night blindness incidence compared with placebo or usual care (moderate certainty).
1 finding from 1 review
Linear growth (length/height) Unit: cm Time frame: 3 months · children under 5 years of age
1 finding from 1 review
Stuntingc · children under 5 years of age
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
Adverse effect: hypercalciuria As defined by trialists Time frame: 3 months · children under 5 years of age
Vitamin D (higher dose) showed no clear difference in adverse effect: hypercalciuria As defined by trialists Time frame:… compared with vitamin D (lower dose) (low certainty).
1 finding from 1 review
Hypercalcaemia · children under 5 years of age
Vitamin D (higher dose) showed no clear difference in adverse effect: hypercalcaemia As defined by trialists Time frame:… compared with vitamin D (lower dose) (low certainty).
1 finding from 1 review