Kátia Melissa Padilha

Development of an instrument to measure beliefs and attitudes from heart valve disease patients

Foi objetivo deste estudo verificar a validade de conteudo e a confiabilidade do instrumento para mensuracao das crencas e atitudes dos pacientes valvopatas sobre sua doenca e tratamento (Instrumento-CAV). O instrumento foi analisado por tres juizes (utilizando criterios pre-determinados) e submetido ao pre-teste (n= 17 sujeitos). A maioria dos itens foi avaliada como pertinente, clara e de significância para a questao analisada. O pre-teste evidenciou a necessidade de pequenas modificacoes na construcao de algumas afirmativas, que otimizaram a compreensao do instrumento pelos pacientes. O instrumento re-estruturado foi aplicado em 46 pacientes para verificacao da consistencia interna. A totalidade do instrumento e a maioria de suas escalas apresentaram consistencia interna satisfatoria. Conclui-se que o instrumento e pertinente ao objeto de estudo e internamente consistente, ratificando a adequacao de sua aplicacao para mensuracao da forca de associacao entre variaveis pesquisadas.Fue objetivo de este estudio verificar la validez del contenido y la confiabilidad del instrumento para mensuracion de las creencias y actitudes de los pacientes con enfermedad de las valvulas cardiacas sobre su enfermedad y tratamiento (Instrumento-CAV). El instrumento fue analisado por tres jueces (utilizando criterios predeterminados) y sometido a prueba (n=17 sujetos). La mayoria de los itenes fue evaluada como pertinente, clara y significante para la cuestion analisada. Con prueba se evidencio la necesidad de pequenos cambios en la construccion de algumas afirmativas, que optimizaron la comprension del instrumento por los pacientes. El instrumento reestructurado fue aplicado en 46 pacientes para verificacion de la consistencia interna. La totalidad del instrumento y la mayoria de sus escalas presentaron consistencia interna satisfactoria. Se pudo concluir que el instrumento es pertinente al objecto de estudio y internamente consistente, ratificando la adecuacion de su aplicacion para mensuracion de la fuerza de asociacion entre las variables investigadas.

Impact of the disease: acceptability, ceiling and floor effects and reliability of an instrument on heart failure

This study evaluated the acceptability, ceiling/floor effects, and the reliability of the instrument for measuring the Impact of the Disease on the Daily Life of Patients with Valvular Disease (IDCV) when applied to 135 patients with heart failure (HF). Acceptability was evaluated by the percentage of unanswered items and by the proportion of patients who responded to all items; the ceiling/floor effects by the percentage of patients who scored in the top of 10% best and worst results of the scale, respectively. Reliability was estimated by internal consistency (Cronbachs alpha coefficient) and stability of the measure (intraclass correlation coefficient - ICC). All patients responded to all items. Ceiling/floor effects evidenced were of moderate magnitude. The Cronbachs alpha was satisfactory for the majority of the domains and ICC> 0.90 in all the domains. The IDCV proved to be an easy to understand questionnaire, with evidence of reliability in patients with HF.

Reliability and practical aspects of the disease impact measure on hypertensive patients

OBJECTIVE to evaluate the feasibility, acceptability, the ceiling and floor effects and the reliability of the Instrument to Measure the Impact of Coronary Disease on Patients Daily Life (IDCV) when applied to hypertensive patients. METHOD one hundred and thirty seven hypertensive outpatients were interviewed, using questionnaires to collect sociodemographic and clinical data, followed by the IDCV. Reliability was assessed according to the temporal stability and internal consistency criteria. RESULTS the IDCV was applied in 8.0 (±3.0) minutes with 100% of the items answered. A ceiling effect of 31.4% was observed in the domain Adjustment to the Disease. The stability measure was observed for the total score and for all domains. There was evidence of internal consistency of the total IDCV (α=0.83) and the domains Physical Impact of the Disease – Symptoms (α=0.78) and Social and Emotional Impact of the Disease (α=0.74). CONCLUSION the IDCV is an instrument of easy use and its reliability among hypertensive patients is evidenced. The domain Adjustment to the Disease, however, should be reviewed in further studies.OBJETIVO: avaliar a praticabilidade, a aceitabilidade, os efeitos-teto e chao e a confiabilidade do instrumento para mensuracao do impacto da doenca no cotidiano do valvopata em pacientes hipertensos. METODO: foram entrevistados 137 pacientes hipertensos em seguimento ambulatorial, com aplicacao dos questionarios de caracterizacao sociodemografica e clinica e impacto da doenca no cotidiano do valvopata, sequencialmente. A confiabilidade foi avaliada segundo os criterios da estabilidade temporal e de consistencia interna. RESULTADOS: o impacto da doenca no cotidiano do valvopata foi aplicado em 8,0 (±3,0) minutos com 100% dos itens respondidos. Foi evidenciado efeito-teto de 31,4% no dominio adaptacao a doenca. A estabilidade da medida foi evidenciada para o escore total e para todos os dominios. Houve evidencias de consistencia interna do impacto da doenca no cotidiano do valvopata total (α=0,83) e para os dominios impacto fisico da doenca - sintomas (α=0,78) e impacto social e emocional da doenca (α=0,74). CONCLUSAO: Conclusao: o impacto da doenca no cotidiano do valvopata e instrumento de facil aplicacao, com evidencias de confiabilidade em pacientes hipertensos. O dominio adaptacao a doenca, entretanto, deve ser revisto em estudos futuros.

Measure of disease impact: instrument construct validity in patients with coronary artery disease

This study estimated the known groups construct validity for the Instrument to Measure the Impact of Coronary Disease on Patients Everyday Life (IDCV) related to signs and symptoms, ventricular systolic function, left ventricular ejection fraction (LVEF) and health-related quality of life (HRQoL) in 153 outpatients with coronary artery disease. Data was obtained through application of IDCV and Brazilian versions of the instruments The Medical Study 36-item Short Form Health Survey - SF-36 and the MacNew Heart Disease Health-related Quality of Life Questionnaire . Mann-Whitney test was used to verify the ability of IDCV in discriminating impact of signs and symptoms, LVEF and ventricular systolic dysfunction. Also, the Kruskal-Wallis test was used to verify the discrimination power of the IDCV in relation to HRQoL. It was observed that the IDCV discriminated the impact between variables scored in HRQOL quartiles (≤Q1, Q1-Q3, ≥Q3). The study findings contribute for improvement of IDCV in measurement of disease impact in coronary artery disease patients.

Medida do impacto da doença: validade de constructo de instrumento entre coronariopatas

This study estimated the known groups construct validity for the Instrument to Measure the Impact of Coronary Disease on Patients Everyday Life (IDCV) related to signs and symptoms, ventricular systolic function, left ventricular ejection fraction (LVEF) and health-related quality of life (HRQoL) in 153 outpatients with coronary artery disease. Data was obtained through application of IDCV and Brazilian versions of the instruments The Medical Study 36-item Short Form Health Survey - SF-36 and the MacNew Heart Disease Health-related Quality of Life Questionnaire . Mann-Whitney test was used to verify the ability of IDCV in discriminating impact of signs and symptoms, LVEF and ventricular systolic dysfunction. Also, the Kruskal-Wallis test was used to verify the discrimination power of the IDCV in relation to HRQoL. It was observed that the IDCV discriminated the impact between variables scored in HRQOL quartiles (≤Q1, Q1-Q3, ≥Q3). The study findings contribute for improvement of IDCV in measurement of disease impact in coronary artery disease patients.

Reliability and construct validity of the Instrument to Measure the Impact of Valve Heart Disease on the Patient's Daily Life

ABSTRACT Objective: evaluate the practicality, acceptability and the floor and ceiling effects, estimate the reliability and verify the convergent constructs validity with the instrument called the Heart Valve Disease Impact on daily life (IDCV) of the valve disease in patients with mitral and or aortic heart valve disease. Method: data was obtained from 86 heart valve disease patients through 3 phases: a face to face interview for a socio-demographic and clinic characterization and then other two done through phone calls of the interviewed patients for application of the instrument (test and repeat test). Results: as for the practicality and acceptability, the instrument was applied with an average time of 9,9 minutes and with 110% of responses, respectively. Ceiling and floor effects observed for all domains, especially floor effect. Reliability was tested using the test - repeating pattern to give evidence of temporal stability of the measurement. Significant negative correlations with moderate to strong magnitude were found between the score of the generic question about the impact of the disease and the scores of IDCV, which points to the validity of the instrument convergent construct. Conclusion: the instrument to measure the impact of valve heart disease on the patients daily life showed evidence of reliability and validity when applied to patients with heart valve disease.Anjos DBM, Rodrigues RCM, Padilha KM, Pedrosa RBS, Gallani MCBJ. Reliability and construct validity of the Instrument to Measure the Impact of Valve Heart Disease on the Patient’s Daily Life. Rev. Latino-Am. Enfermagem. 2016;24:e2730. [Access ___ __ ____]; Available in: ____________________. DOI: http://dx.doi. org/10.1590/1518-8345.0624.2730. dia mês ano URL Confiabilidade e validade de construto do Instrumento para Mensuração do Impacto da Doença no Cotidiano do Valvopata

Análisis de factores del instrumento de medición de impacto de la enfermedad en el cotidiano

OBJECTIVE to verify the structure of factors of an instrument to measure the Heart Valve Disease Impact on Daily Life (IDCV) when applied to coronary artery disease patients. METHOD the study included 153 coronary artery disease patients undergoing outpatient follow-up care. The IDCV structure of factors was initially assessed by means of confirmatory factor analysis and, subsequently, by exploratory factor analysis. The Varimax rotation method was used to estimate the main components of analysis, eigenvalues greater than one for extraction of factors, and factor loading greater than 0.40 for selection of items. Internal consistency was estimated using Cronbachs alpha coefficient. RESULTS confirmatory factor analysis did not confirm the original structure of factors of the IDCV. Exploratory factor analysis showed three dimensions, which together explained 78% of the measurement variance. CONCLUSION future studies with expansion of case selection are necessary to confirm the IDCV new structure of factors.

Análise de fatores do instrumento de medida do impacto da doença no cotidiano

OBJECTIVE to verify the structure of factors of an instrument to measure the Heart Valve Disease Impact on Daily Life (IDCV) when applied to coronary artery disease patients. METHOD the study included 153 coronary artery disease patients undergoing outpatient follow-up care. The IDCV structure of factors was initially assessed by means of confirmatory factor analysis and, subsequently, by exploratory factor analysis. The Varimax rotation method was used to estimate the main components of analysis, eigenvalues greater than one for extraction of factors, and factor loading greater than 0.40 for selection of items. Internal consistency was estimated using Cronbachs alpha coefficient. RESULTS confirmatory factor analysis did not confirm the original structure of factors of the IDCV. Exploratory factor analysis showed three dimensions, which together explained 78% of the measurement variance. CONCLUSION future studies with expansion of case selection are necessary to confirm the IDCV new structure of factors.

Factor analysis of an instrument to measure the impact of disease on daily life.

OBJECTIVE to verify the structure of factors of an instrument to measure the Heart Valve Disease Impact on Daily Life (IDCV) when applied to coronary artery disease patients. METHOD the study included 153 coronary artery disease patients undergoing outpatient follow-up care. The IDCV structure of factors was initially assessed by means of confirmatory factor analysis and, subsequently, by exploratory factor analysis. The Varimax rotation method was used to estimate the main components of analysis, eigenvalues greater than one for extraction of factors, and factor loading greater than 0.40 for selection of items. Internal consistency was estimated using Cronbachs alpha coefficient. RESULTS confirmatory factor analysis did not confirm the original structure of factors of the IDCV. Exploratory factor analysis showed three dimensions, which together explained 78% of the measurement variance. CONCLUSION future studies with expansion of case selection are necessary to confirm the IDCV new structure of factors.

Influence of sociodemographic and clinical characteristics at the impact of valvular heart disease

OBJECTIVE to analyze the sociodemographic and clinical characteristics of patients with valvular heart disease and to verify the influence of these variables on the impact of valve disease in daily life. METHOD the study involved 86 outpatients. Data collection was performed in two stages - face-to-face interview for sociodemographic and clinical characterization and through telephone contact for the application of the Instrument to Measure the Impact of Valvular Heart Disease on Patients Everyday Life (IDCV). Data were analyzed through descriptive statistics and multiple regression analysis. RESULTS it was noticed that the total score of IDCV and its domains were influenced by age, schooling, presence or absence of symptoms, use or not of diuretic. CONCLUSION The impact of the disease was influenced by sociodemographic and clinical variables. The results provide subsidies for the design of nursing interventions aimed at reducing the impact of the disease on the patients daily life with valve disease.