General perceived self-efficacy: validation analysis in Greek cancer patients.
ABSTRACT The present study aims to validate the General Perceived Self-efficacy Scale (GSE) in Greek cancer patients.
The scale was administered twice, with a 3-day interval, to 99 advanced cancer patients. The patients also completed the Anxiety Subscale from the Greek Hospital Depression and Anxiety Scale.
Factor analyses identified a one-factor solution, explaining 74.6% of the variance. The Greek version of the GSE had a Cronbach's alpha of 0.927. Validity as performed using known-group analysis showed good results. Satisfactory construct validity was supported by the correlation analysis between the GSE and anxiety (r = -0.507, p < 0.0005). Interitem correlations was also satisfactory at p < 0.0005.
These psychometric properties of the Greek version of the GSE showed that it is a valid and reliable measured when administered to cancer patients.
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ABSTRACT: This study tested effects of a nurse-administered self-efficacy intervention given on five monthly occasions and designed to enhance patients' self-care self-efficacy. The hypotheses were that at four months and eight months after beginning chemotherapy the efficacy-enhancing experimental group would have significantly higher scores on quality of life and self-care self-efficacy than the control group and significantly less symptom distress. Fifty-six women receiving chemotherapy for breast cancer were randomized to the experimental and control groups. Outcome variables were quality of life, measured by the Functional Assessment of Cancer Treatment-Breast (FACT-B), symptom distress, measured by the Symptom Distress Scale (SDS), and factors of self-care self-efficacy, measured by Strategies Used by Patients to Promote Health (SUPPH). The interaction effects for the FACT-B ranged from small for functional concerns (eta square = .03) to large for social concerns (eta square = .110); effects for the SDS were large (eta square = .140), and for factors on the SUPPH effect sizes ranged from small (eta square = .01) for Enjoying Life and Stress Reduction to medium (eta square = .089) for Coping, and large (eta square = .141) for Making Decisions. Interventions to promote self-efficacy may increase quality of life and decrease symptom distress for women diagnosed with breast cancer.Research and Theory for Nursing Practice 02/2001; 15(3):277-94.
- Journal of Consulting and Clinical Psychology 11/1981; 49(5):648-58. · 4.85 Impact Factor
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ABSTRACT: Self-efficacy (Bandura, 1986) has been shown to impact on health practices as well as adaptation to illness and treatment. The purposes of this paper are to describe self-efficacy theory and review literature using self-efficacy theory to investigate prevention of cancer and adaptation to cancer. Measurement of self-efficacy is also discussed. Evidence from research examining applications of Bandura's theory of self-efficacy in oncology suggests relationships between self-efficacy and cancer prevention and self-efficacy and adaptation to cancer. Strong percepts of self-efficacy predict intention to quit smoking, increased participation in screening programs, and adjustment to cancer diagnosis. Increased self-efficacy is associated with increased adherence to treatment, increased self-care behaviors, and decreased physical and psychological symptoms. The advanced practice nurse is in an excellent position to give feedback that may help support patients' self-efficacy.Research and Theory for Nursing Practice 02/1997; 11(1):21-37; discussion 39-43.