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Sex ratios at birth after induced abortion

Overview of attention for article published in Canadian Medical Association Journal, April 2016
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About this Attention Score

  • In the top 5% of all research outputs scored by Altmetric
  • High Attention Score compared to outputs of the same age (99th percentile)
  • High Attention Score compared to outputs of the same age and source (95th percentile)

Mentioned by

news
19 news outlets
blogs
4 blogs
twitter
252 tweeters
facebook
5 Facebook pages

Citations

dimensions_citation
26 Dimensions

Readers on

mendeley
54 Mendeley
Title
Sex ratios at birth after induced abortion
Published in
Canadian Medical Association Journal, April 2016
DOI 10.1503/cmaj.151074
Pubmed ID
Authors

Marcelo L. Urquia, Rahim Moineddin, Prabhat Jha, Patricia J. O’Campo, Kwame McKenzie, Richard H. Glazier, David A. Henry, Joel G. Ray

Abstract

Skewed male:female ratios at birth have been observed among certain immigrant groups. Data on abortion practices that might help to explain these findings are lacking. We examined 1 220 933 births to women with up to 3 consecutive singleton live births between 1993 and 2012 in Ontario. Records of live births, and induced and spontaneous abortions were linked to Canadian immigration records. We determined associations of male:female infant ratios with maternal birthplace, sex of the previous living sibling(s) and prior spontaneous or induced abortions. Male:female infant ratios did not appreciably depart from the normal range among Canadian-born women and most women born outside of Canada, irrespective of the sex of previous children or the characteristics of prior abortions. However, among infants of women who immigrated from India and had previously given birth to 2 girls, the overall male:female ratio was 1.96 (95% confidence interval [CI] 1.75-2.21) for the third live birth. The male:female infant ratio after 2 girls was 1.77 (95% CI 1.26-2.47) times higher if the current birth was preceded by 1 induced abortion, 2.38 (95% CI 1.44-3.94) times higher if preceded by 2 or more induced abortions and 3.88 (95% CI 2.02-7.50) times higher if the induced abortion was performed at 15 weeks or more gestation relative to no preceding abortion. Spontaneous abortions were not associated with male-biased sex ratios in subsequent births. High male:female ratios observed among infants born to women who immigrated from India are associated with induced abortions, especially in the second trimester of pregnancy.

Twitter Demographics

The data shown below were collected from the profiles of 252 tweeters who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 54 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 54 100%

Demographic breakdown

Readers by professional status Count As %
Student > Bachelor 9 17%
Student > Master 7 13%
Other 6 11%
Student > Ph. D. Student 6 11%
Student > Postgraduate 5 9%
Other 12 22%
Unknown 9 17%
Readers by discipline Count As %
Medicine and Dentistry 8 15%
Nursing and Health Professions 7 13%
Social Sciences 6 11%
Biochemistry, Genetics and Molecular Biology 5 9%
Psychology 4 7%
Other 10 19%
Unknown 14 26%

Attention Score in Context

This research output has an Altmetric Attention Score of 394. 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 12 June 2021.
All research outputs
#43,173
of 17,954,410 outputs
Outputs from Canadian Medical Association Journal
#93
of 7,577 outputs
Outputs of similar age
#1,181
of 272,697 outputs
Outputs of similar age from Canadian Medical Association Journal
#6
of 114 outputs
Altmetric has tracked 17,954,410 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 99th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 7,577 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 29.7. This one has done particularly well, scoring higher than 98% 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 272,697 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 99% of its contemporaries.
We're also able to compare this research output to 114 others from the same source and published within six weeks on either side of this one. This one has done particularly well, scoring higher than 95% of its contemporaries.