Translation and cross-cultural adaptation of the Hypertension Knowledge-Level Scale for use in Brazil.
Juliana Perez Arthur, Maria de Fátima Mantovani, Maria Isabel Raimondo Ferraz and 3 others
PMID 30462786WHAT IT FOUND
A Brazilian Portuguese hypertension knowledge scale was translated, adapted and rated by experts as clear and applicable.
It showed consistent scores and found lowest knowledge about disease definition, with higher scores in people with diagnosed hypertension.
Key findings
01The adapted scale reached expert agreement after two validation rounds, with agreement rising from 0.84 to 0.96 and score consistency at 0.92.
02In the pre-test, average correct answers were 74.7%, with the lowest score in disease definition at 46.2% and the highest in lifestyle at 89.5%.
03People with diagnosed hypertension answered more correctly than people without hypertension, with a reported p-value of 0.0035.
STILL TO COME
How it was doneWhat they foundWhat it means for RNs
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What it does not show
The pre-test sample was small and included only literate adults, and people who could not read or complete the questionnaire were excluded. The study validated content, face and score consistency; it did not test whether using the scale improves patient education, adherence, blood pressure or complications. The scale was adapted for Brazilian Portuguese and a Brazilian adult population, so it may not work unchanged in other languages, cultures or literacy levels. The authors note that few countries have adapted the scale, which limits comparison with other versions.
Declared interests
The study was financed in part by CAPES, Finance Code 001, and is based on a master's thesis; no commercial conflict is stated.
The easy way to misread this
Do not conclude that using this scale improves hypertension control or patient adherence. The study only translated and validated the questionnaire as an assessment tool; it did not test an education intervention or clinical outcomes.