title: The Polish version of the Quality of Life Assessment of Growth Hormone Deficiency in Adults (QoL-AGHDA) - four-stage translation and validation.
abstract: BACKGROUND
  The Quality of Life Assessment of Growth Hormone Deficiency in Adults (QoL-AGHDA) was developed simultaneously in five languages (English, Swedish, German, Italian and Spanish) to measure quality of life (QoL) in adult patients with Growth Hormone (GH) deficiency. The aim of the project was to produce a validated Polish version of the QoL-AGHDA that was conceptually equivalent to the UK-English version.
  
  
  METHODS
  Translation and validation procedure consisted of 4 stages. Stage 1: A bilingual translation panel [7 participants, fluent in both English and Polish (Polish as their first language) with university education] translated the questionnaire. Stage 2: A lay translation panel (6 participants of an average to lower than average educational level, speaking only the target language) reviewed the wording of the draft version produced by bilingual panel to improve clarity and immediacy. Stage 3: The translated questionnaire was then field-tested with 15 adults with GH deficiency. Stage 4: Finally, the amended version underwent psychometric evaluation to check its reliability and validity (it was administered to 85 GH-deficient adults on two occasions, two weeks apart).
  
  
  RESULTS
  The Polish QoL-AGHDA version was successfully adapted and it is characterized by a high degree of reliability and validity. The test-retest reliability coefficient for the Polish QoL-AGHDA was 0.92. The Cronbach's Alpha coefficient for the Polish QoL-AGHDA was 0.91 (N = 70) at Time 1 and 0.94 (N = 79) at Time 2. Correlation between QoL-AGHDA and Nottingham Health Profile items confirmed high convergent and divergent validity.
  
  
  CONCLUSIONS
  The Polish QoL-AGHDA is a reliable and valid measure of QoL suitable for use in clinical studies and routine clinical practice.
authors.affiliation: Department of Oncological Endocrinology, Medical University of Łodź. MKarbownik@hotmail.com
authors.forename: Małgorzata
authors.initials: M
authors.lastname: Karbownik-Lewińska
authors.forename: Andrzej
authors.initials: A
authors.lastname: Lewiński
authors.forename: Stephen
authors.initials: S
authors.lastname: McKenna
authors.forename: Agnieszka
authors.initials: A
authors.lastname: Kokoszko
authors.forename: Sławomir
authors.initials: S
authors.lastname: Mucha
authors.forename: Jan
authors.initials: J
authors.lastname: Komorowski
authors.forename: Barbara
authors.initials: B
authors.lastname: Krzyzanowska-Swiniarska
authors.forename: Maria
authors.initials: M
authors.lastname: Gryczyńska
authors.forename: Jerzy
authors.initials: J
authors.lastname: Sowiński
authors.forename: Roman
authors.initials: R
authors.lastname: Junik
authors.forename: David
authors.initials: D
authors.lastname: Meads
authors.forename: Maria
authors.initials: M
authors.lastname: Kołtowska-Häggström
mesh_terms: D000328:Adult; D005260:Female; D019382:Human Growth Hormone / Q000172:deficiency*; D006801:Humans; D007802:Language; D008297:Male; D008875:Middle Aged; D011044:Poland; D011788:Quality of Life; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires; D014175:Translating; D006113:United Kingdom
chemical_list: D019382:Human Growth Hormone