“…Searching in Pubmed for "Nursing Diagnosis" and "Content validity", from 2012 back to 1991 and language limited to English, Portuguese, Catalan, Spanish, French and Italian, retrieved 40 results. Only three of these research papers were related to whole controlled-vocabulary content validity, but two of them did not present any method nor result on that, just a consideration of its importance for building such terminological systems [11,12]. The other study, considered cultural adaptation of the OMAHA system and measured content validity using the inter-rater reliability with a panel of six nursing students [24].…”