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Evaluation of the psychometric properties of the London Measure of Unplanned Pregnancy in Brazilian Portuguese

Overview of attention for article published in BMC Pregnancy and Childbirth, August 2016
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Title
Evaluation of the psychometric properties of the London Measure of Unplanned Pregnancy in Brazilian Portuguese
Published in
BMC Pregnancy and Childbirth, August 2016
DOI 10.1186/s12884-016-1037-2
Pubmed ID
Authors

Ana Luiza Vilela Borges, Geraldine Barrett, Osmara Alves dos Santos, Natalia de Castro Nascimento, Fernanda Bigio Cavalhieri, Elizabeth Fujimori

Abstract

Estimates of unplanned pregnancy worldwide are of concern, especially in low and middle-income countries, including Brazil. Although the contraceptive prevalence rate is high in Brazil, almost half of all pregnancies are reported as unintended. The only source of nationally representative data about pregnancy intention is the Demographic and Health Survey, as with many other countries. In more recent years, however, it has been realized that concept of unintended pregnancy is potentially more complex and requires more sophisticated measurement strategies, such as the London Measure of Unplanned Pregnancy (LMUP). The LMUP has been translated and validated in other languages, but not Portuguese yet. In this study, we evaluate the psychometric properties of the LMUP in the Portuguese language, Brazilian version. A Brazilian Portuguese version of the LMUP was produced via translation and back-translation. After piloting, the mode of administration was changed from self-completion to interviewer-administration. The measure was field tested with pregnant, postpartum, and postabortion women recruited at maternity and primary health care services in Sao Paulo city. Reliability (internal consistency) was assessed using Cronbach's alpha and item-total correlations. Construct validity was assessed using principal components analysis and hypothesis testing. Scaling was assessed with Mokken analysis. 759 women aged 15-44 completed the Brazilian Portuguese LMUP. There were no missing data. The measure was acceptable and well targeted. Reliability testing demonstrated good internal consistency (alpha = 0.81, all item-rest correlations >0.2). Validity testing confirmed that the measure was unidimensional and that all hypotheses were met: there were lower LMUP median scores among women in the extreme age groups (p < 0.001), among non-married women (p < 0.001) and those with lower educational attainment (p < 0.001). The Loevinger H coefficient was 0.60, indicating a strong scale. The Brazilian Portuguese LMUP is a valid and reliable measure of pregnancy planning/intention that is now available for use in Brazil. It represents a useful addition to the public health research and surveillance toolkit in Brazil.

Twitter Demographics

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Mendeley readers

The data shown below were compiled from readership statistics for 83 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 83 100%

Demographic breakdown

Readers by professional status Count As %
Student > Master 14 17%
Student > Bachelor 12 14%
Researcher 9 11%
Student > Ph. D. Student 7 8%
Student > Doctoral Student 6 7%
Other 13 16%
Unknown 22 27%
Readers by discipline Count As %
Medicine and Dentistry 24 29%
Nursing and Health Professions 17 20%
Social Sciences 8 10%
Pharmacology, Toxicology and Pharmaceutical Science 3 4%
Psychology 3 4%
Other 4 5%
Unknown 24 29%

Attention Score in Context

This research output has an Altmetric Attention Score of 1. 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 11 July 2017.
All research outputs
#10,163,136
of 11,454,620 outputs
Outputs from BMC Pregnancy and Childbirth
#1,912
of 2,037 outputs
Outputs of similar age
#215,304
of 258,304 outputs
Outputs of similar age from BMC Pregnancy and Childbirth
#99
of 108 outputs
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