The respective translation to reliability terms is given in (18).
This study describes the development of a translation, cultural adaptation, reliability and validity study of the Italian version of PTOPS.
*In the Italian translation, test-retest reliability was not analyzed because the patients were not in a stable phase between visit 1 and 2. In the Afrikaans versions, correlations (as defined by a Pearson's product moment correlation = 0.3) were only observed between the GSRS Abdominal pain domain and the QOLRAD Emotional distress and Physical/social functioning domains.
Both are short versions of the SCL-90-R, which has been extensively used in research and clinical settings, and the Norwegian translations have satisfactory reliability and validity [ 20].
The reliability of translation to the local dialect was tested by back translation, done by a person with sound knowledge of the language, but who was not aware of the objectives of the study.
However, some portions of the Hindi transcripts were translated separately, by two project assistants, and some were back translated to check linguistic reliability and correctness in translation.
Overall, 197 of the 198 the items tested met or exceeded standard cut-offs for acceptable test-retest and inter-rater reliability after translation into the target languages.
Virtually all of the items tested met or exceeded standard cut-offs for acceptable test-retest and inter-rater reliability after translation into target languages and a substantial proportion of items showed excellent reliability.
As a measure of PTSD symptom severity, the PDS and the German translation have demonstrated high reliability and high correlations with other measures of trauma-related psychopathology [ 27, 28].
Construct validity refers to the consistency in assessments between items that intend to measure the same or similar theoretical variable, and is an umbrella term for terms like convergent, descriptive, factorial, translation validity and parallel reliability [ 20].
