title: Measuring English proficiency and language preference: are self-reports valid?
authors.forename: John W
authors.initials: JW
authors.lastname: Ayers
mesh_terms: D000069:Acculturation; D001294:Attitude to Health / Q000208:ethnology; D015982:Bias; D002755:Choice Behavior; D006304:Health Status; D006801:Humans; D007407:Interviews as Topic / Q000379:methods* / Q000592:standards; D008037:Linguistics / Q000379:methods* / Q000592:standards; D016015:Logistic Models; D019303:Multilingualism; D015203:Reproducibility of Results