"Construção e validação de um instrumento para avaliação do sentimento de impotência" / Construction and validation of the instrument for assessment powerlessness

AUTOR(ES)
DATA DE PUBLICAÇÃO

2004

RESUMO

Powerlessness is a concept accepted as clinical focus of nursing practice. The aims of this study were: to develop and test a measure of powerlessness in adult patients; to verify whether powerlessness is a construct distinct from locus of control and to analyse the association between powerlessness and locus of control. Items were developed from the powerless dimensions of the White, Roberts (1993) model and from the defining characteristics of powerlessness according to the North American Nursing Diagnosis Association (2002, 2003). Content validity was supported for 23 itens through the rating of six experts following criteria established by Pasquali (1998). Intelligibility test was performed in 25 patients and 21 items were retained. The instrument was tested with 210 adult patients of medical-surgical wards for item selection, reliability and validity. Through item analysis nine items were discarded. The remaining 12 items were tested for reliability and validity. Three subscales generated by factor analysis (Ability to Perform Behaviors, Ability to Make Decisions and Emotional Responses to Personal Control) did not confirm the White, Roberts model, and demonstrated internal consistency ranging from .58 to .85. Total scale alpha was .80. Initial estimates of criterion-related and construct validity were documented with associations between the developed measure and a general statement on personal control perception (p<.000), and correlation with internality scores generated from scores on Health Locus of Control Scale (p=-.33).Items of Health Locus of Control were well discriminated from the powerlessness items through factor analysis, suggesting they are distinct concepts. With refinement the Measure of Powerlessness for Adult Patients will provide a basis for assessing this psychosocial response, definition and evaluating clinical interventions designed to enhance the emotional comfort of adult patients.

ASSUNTO(S)

psychometry test construct locus de controle powerlessness psicometria nursing diagnosis construção do teste diagnóstico de enfermagem locus of control sentimento de impotência

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