Imdad, Aamer, Herzer, Kurt, Mayo-Wilson, Evan, Yakoob, Mohammad Yawar, Bhutta, Zulfiqar A, Aamer Imdad, Kurt Herzer, Evan Mayo‐Wilson, Mohammad Yawar Yakoob, Zulfiqar A Bhutta
Abstract
Vitamin A deficiency (VAD) is a major public health problem in low and middle income countries affecting 190 million children under 5. VAD can lead to many adverse health consequences, including death.
This research output has an Altmetric Attention Score of 25. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 07 October 2025.
All research outputs
#1,863,456
of 32,865,689 outputs
Outputs from Cochrane database of systematic reviews
#3,900
of 14,377 outputs
Outputs of similar age
#8,883
of 244,608 outputs
Outputs of similar age from Cochrane database of systematic reviews
#32
of 119 outputs
Altmetric has tracked 32,865,689 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 94th percentile: it's in the top 10% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 14,377 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 38.7. This one has gotten more attention than average, scoring higher than 72% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 244,608 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 96% of its contemporaries.
We're also able to compare this research output to 119 others from the same source and published within six weeks on either side of this one. This one has gotten more attention than average, scoring higher than 73% of its contemporaries.
