Rafaela Batista dos Santos Pedrosa

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.

Influencia de las características sociodemográficas y clínicas en el impacto de la enfermedad en válvulas del corazón

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.

Influência das características sociodemográficas e clínicas no impacto da doença em valvopatas

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.

Construct Validity of the Brazilian Version of the Self-Efficacy for Appropriate Medication Adherence Scale.

BACKGROUND AND PURPOSE This study aimed to evaluate the reliability and the construct validity of the Brazilian version of the Self-Efficacy for Appropriate Medication Adherence Scale (SEAMS). METHODS One hundred forty-seven patients with coronary artery disease participated in the study. Reliability was estimated by composite reliability (CR). Convergent validity was estimated by the factor loading and average variance extracted (AVE). The discriminant validity was assessed by cross-factor loadings, comparing the square roots of AVEs by correlation coefficients between latent constructs and disattenuated correlation. RESULTS The values of CR of .88 and .99 for Factors 1 and 2, respectively, indicate internal consistency reliability. Values of AVE = 0.52 for Factor 1 and 0.69 for Factor 2 to the convergent validity of the model. Cross-factor loadings were found ≥.50 for all items of the scale in areas that were allocated in the original instrument, square roots of AVEs higher than the correlations between the constructs and desatenuada correlation (r = .83), suggesting discriminant validity fashion model. CONCLUSION Confirmatory factor analysis partially yielded the construct validity of the Brazilian version of the SEAMS.BACKGROUND AND PURPOSE This study aimed to evaluate the reliability and the construct validity of the Brazilian version of the Self-Efficacy for Appropriate Medication Adherence Scale (SEAMS). METHODS One hundred forty-seven patients with coronary artery disease participated in the study. Reliability was estimated by composite reliability (CR). Convergent validity was estimated by the factor loading and average variance extracted (AVE). The discriminant validity was assessed by cross-factor loadings, comparing the square roots of AVEs by correlation coefficients between latent constructs and disattenuated correlation. RESULTS The values of CR of .88 and .99 for Factors 1 and 2, respectively, indicate internal consistency reliability. Values of AVE = 0.52 for Factor 1 and 0.69 for Factor 2 to the convergent validity of the model. Cross-factor loadings were found ≥.50 for all items of the scale in areas that were allocated in the original instrument, square roots of AVEs higher than the correlations between the constructs and desatenuada correlation (r = .83), suggesting discriminant validity fashion model. CONCLUSION Confirmatory factor analysis partially yielded the construct validity of the Brazilian version of the SEAMS.