ABC | Volume 110, Nº1, January 2018

Original Article Santos et al Development and psychometric validation of HIPER-Q Arq Bras Cardiol. 2018; 110(1):60-67 Table 2 – Classification of patient’s knowledge by HIPER-Q score Sum of the scores Percentage Classification of knowledge From 46 – 51 points 90 – 100% Excellent From 36 – 45 points 70 – 89% Good From 25 – 35 points 50 – 69% Acceptable From 15 – 24 points 30 – 49% Poor < 15 points < 30% Insufficient Table 3 – Score of the HIPER-Q items (n = 184) (median and interquartile range), and intra-class correlation coefficient of each item (n = 30) Domain Questions HIPER-Q score in median (interquartile range) ICC Self-care 9.If a health professional finds that your blood pressure is altered, you should 3 (0) 0.72 15. With respect to self-measurement of blood pressure, it is correct to say that 0 (1) 0.96 17. With respect to systemic arterial hypertension patient’s self-care, it is correct to say that: 1 (3) 0.79 Treatment 6. What is the ideal treatment to reduce blood pressure levels? 1 (2) 0.75 14. Which of these drugs aim to reduce blood pressure levels? 3 (2) 0.80 Diagnosis 5. Which among the items listed below are the most accurate in the diagnosis of systemic arterial hypertension? 1 (1) 0.82 16. About the “white coat syndrome”, it is correct to say that 0 (3) 0.85 Physical exercise 4. Physical exercise for systemic arterial hypertension patients should: 1 (3) 0.81 8. The practice of physical exercises is contraindicated when the patient: 1 (3) 0.76 10. On the basis of your knowledge about systemic arterial hypertension, answer the following: 3 (0) 0.81 11. What favorable changes are systemic arterial hypertension patients able to obtain with the regular practice of physical exercises? 1 (3) 0.82 Concept and pathophysiology 1. Systemic arterial hypertension is: 1 (3) 0.80 13. What are the main consequences of untreated systemic arterial hypertension? 3 (2) 0.76 Signs and symptoms 3. With respect to systemic arterial hypertension symptoms, check the correct answer 1 (3) 0.81 Risk factors 2. Which of the risk factor groups below has the greatest influence on the development of systemic arterial hypertension? 3 (2) 0.81 7. Which systolic arterial pressure and diastolic arterial pressure values, respectively, are recommended for systemic arterial hypertension patients? 1 (3) 0.75 12. With respect to stress, we can say that: 1 (3) 0.78 ICC: intra-class correlation coefficient. by the study population. 31,32 Second, comparisons of the factorial analysis reported in similar studies 12,31,33 revealed that the HIPER-Q showed similar arrangement of factors and items; in each of the five factors, those items with similar knowledge domains were predominant in the instruments. The factors were clustered by stability, interpretation of the areas and basic principles of construction rules, in order to establish a reliable, consistent construct. In each domain, the factors included different amounts of terms that were correlated with each other, which may be explained by the fact that SAH is characterized as a systemic, multifactorial disease. 3,24 Results of internal consistency (Cronbach’s alpha = 0.648) were consistent with those reported in previous studies involving instruments of assessment of hypertensive patients’ knowledge about their conditions, 19,34-36 and in studies with similar structure. 12,33 This indicates an adequate correlation between the items of the questionnaire. Nevertheless, the HIPER-Q was validated in public and private CR programs with different characteristics, which may have affected the alpha value (not as high as those of similar studies). Regarding the criterion validity, both educational attainment and family income were related to the knowledge 64