title: Evaluation of the London Measure of Unplanned Pregnancy in a United States population of women.
abstract: OBJECTIVE
  To evaluate the reliability and validity of the London Measure of Unplanned Pregnancy (a U.K.-developed measure of pregnancy intention), in English and Spanish translation, in a U.S. population of women.
  
  
  METHODS
  A psychometric evaluation study of the London Measure of Unplanned Pregnancy (LMUP), a six-item, self-completion paper measure was conducted with 346 women aged 15-45 who presented to San Francisco General Hospital for termination of pregnancy or antenatal care. Analyses of the two language versions were carried out separately. Reliability (internal consistency) was assessed using Cronbach's alpha and item-total correlations. Test-retest reliability (stability) was assessed using weighted Kappa. Construct validity was assessed using principal components analysis and hypothesis testing.
  
  
  RESULTS
  Psychometric testing demonstrated that the LMUP was reliable and valid in both U.S. English (alpha = 0.78, all item-total correlations >0.20, weighted Kappa = 0.72, unidimensionality confirmed, hypotheses met) and Spanish translation (alpha = 0.84, all item-total correlations >0.20, weighted Kappa = 0.77, unidimensionality confirmed, hypotheses met).
  
  
  CONCLUSIONS
  The LMUP was reliable and valid in U.S. English and Spanish translation and therefore may now be used with U.S. women.
authors.affiliation: Department of Obstetrics, Gynecology and Reproductive Sciences, San Francisco General Hospital and the Bixby Center for Global Reproductive Health, University of California San Francisco, San Francisco, California, United States of America. dmorof@gmail.com
authors.forename: Diane
authors.initials: D
authors.lastname: Morof
authors.forename: Jody
authors.initials: J
authors.lastname: Steinauer
authors.forename: Sadia
authors.initials: S
authors.lastname: Haider
authors.forename: Sonia
authors.initials: S
authors.lastname: Liu
authors.forename: Philip
authors.initials: P
authors.lastname: Darney
authors.forename: Geraldine
authors.initials: G
authors.lastname: Barrett
mesh_terms: D000023:Abortion Applicants / Q000523:psychology; D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D033182:Intention; D016015:Logistic Models; D008875:Middle Aged; D011247:Pregnancy; D049168:Pregnancy, Unplanned / Q000523:psychology*; D025341:Principal Component Analysis; D011594:Psychometrics; D011795:Surveys and Questionnaires; D014481:United States; D055815:Young Adult