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Early amniocentesis versus transabdominal chorion villus sampling for prenatal diagnosis

Overview of attention for article published in Cochrane database of systematic reviews, January 1999
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About this Attention Score

  • Above-average Attention Score compared to outputs of the same age (61st percentile)

Mentioned by

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2 Wikipedia pages

Citations

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21 Dimensions

Readers on

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18 Mendeley
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Title
Early amniocentesis versus transabdominal chorion villus sampling for prenatal diagnosis
Published in
Cochrane database of systematic reviews, January 1999
DOI 10.1002/14651858.cd000077
Pubmed ID
Authors

Zarko Alfirevic

Abstract

A major disadvantage of amniocentesis is that test results are usually available only after 18 weeks gestation. Early amniocentesis can now be done between 9 to 14 weeks gestation. The objective was to assess the safety and accuracy of early amniocentesis compared with chorion villus sampling. The Cochrane Pregnancy and Childbirth Group trials register and the Cochrane Controlled Trials Register were searched. Date of last search: October 1998. Randomised trials comparing early amniocentesis with transabdominal chorion villus sampling. One reviewer assessed eligibility and trial quality. Three studies were included. Sampling failure was 0.4% in the early amniocentesis group compared to 2% in the chorion villus group (relative risk 0.23, 95% confidence interval 0.08 to 0.65). Consequently, more women in the chorion villus sampling group needed a second prenatal diagnostic test (relative risk 0.43, 95% confidence interval 0.21 to 0.88). There were no statistically significant differences in the laboratory failures (relative risk 0.43, 95% confidence interval 0. 17 to 1.10) or number of women with various chromosomal abnormalities (relative risk 0.51, 95% confidence interval 0.26 to 1. 04). Combined total pregnancy loss in the early amniocentesis group was 6.2% (57/915) compared with 5% (46/917) in the chorion villus sampling group (relative risk 1.24, 95% confidence interval 0.85 to 1.81). There were more spontaneous miscarriages after early amniocentesis (4.4% versus 2.3%, relative risk 1.92, 95% confidence interval 1.14 to 3.23). There was no difference in the incidence of neonatal respiratory distress and anomalies in the newborn infants. The incidence of talipes was greater in the early amniocentesis group, although haemangiomas were more common in the chorion villus sampling group. Current data suggest that early amniocentesis is associated with a greater risk of spontaneous miscarriage and neonatal talipes compared to transabdominal chorion villus sampling. An increased risk of these complications needs to be weighed against fewer technical difficulties and the possibility of fewer neonatal haemangiomas.

Mendeley readers

The data shown below were compiled from readership statistics for 18 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
France 1 6%
Ireland 1 6%
Unknown 16 89%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 4 22%
Student > Bachelor 3 17%
Other 3 17%
Student > Doctoral Student 2 11%
Librarian 1 6%
Other 5 28%
Readers by discipline Count As %
Medicine and Dentistry 9 50%
Psychology 2 11%
Biochemistry, Genetics and Molecular Biology 2 11%
Decision Sciences 2 11%
Linguistics 1 6%
Other 0 0%
Unknown 2 11%

Attention Score in Context

This research output has an Altmetric Attention Score of 3. 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 10 June 2019.
All research outputs
#4,749,761
of 15,220,159 outputs
Outputs from Cochrane database of systematic reviews
#7,570
of 11,158 outputs
Outputs of similar age
#97,073
of 268,326 outputs
Outputs of similar age from Cochrane database of systematic reviews
#208
of 259 outputs
Altmetric has tracked 15,220,159 research outputs across all sources so far. This one is in the 48th percentile – i.e., 48% of other outputs scored the same or lower than it.
So far Altmetric has tracked 11,158 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 22.8. This one is in the 26th percentile – i.e., 26% of its peers scored the same or lower than it.
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 268,326 tracked outputs that were published within six weeks on either side of this one in any source. This one has gotten more attention than average, scoring higher than 61% of its contemporaries.
We're also able to compare this research output to 259 others from the same source and published within six weeks on either side of this one. This one is in the 18th percentile – i.e., 18% of its contemporaries scored the same or lower than it.