Limits...
The Mediating Effects of Self-Esteem and Optimism on the Relationship between Quality of Life and Depressive Symptoms of Breast Cancer Patients.

Ha EH, Cho YK - Psychiatry Investig (2014)

Bottom Line: Analyses showed that when breast cancer patients' quality of life affects depressive symptoms, the full mediation effect of self-esteem was statistically significant.Also, findings revealed there to be a significant partial mediation effect due to optimism.In addition, results suggested that optimism is also vital to psychological intervention because it functioned as partial cause of heightened depressive symptoms when breast cancer patients' quality of life affected depressive symptoms.

View Article: PubMed Central - PubMed

Affiliation: Department of Child Welfare and Child Studies, Sookmyung Women's University, Seoul, Republic of Korea.

ABSTRACT

Objective: This study investigated the mediating effects of the internal psychological factors of self-esteem and optimism on the relationship between breast cancer patients' quality of life in terms of symptoms and functioning and depressive symptoms.

Methods: The study centered on 384 breast cancer patients who had within a 24-month period received diagnosis of 0-4 stage cancer and had medical treatment. To achieve the study's purpose, the study made use of EORTC QLQ BR23, CES-D, and the Self-Esteem and Optimism Scales.

Results: Findings revealed that breast cancer patients' quality of life was negatively impacted by self-esteem and optimism, and that self-esteem and optimism impacted negatively on depressive symptoms. Analyses showed that when breast cancer patients' quality of life affects depressive symptoms, the full mediation effect of self-esteem was statistically significant. Also, findings revealed there to be a significant partial mediation effect due to optimism.

Conclusion: Study findings demonstrated that enhancing self-esteem is crucial in the psychological intervention of depressive symptoms because self-esteem functioned as the main causal factor accounting for all variation when breast cancer patients' quality of life affected depressive symptoms. In addition, results suggested that optimism is also vital to psychological intervention because it functioned as partial cause of heightened depressive symptoms when breast cancer patients' quality of life affected depressive symptoms.

No MeSH data available.


Related in: MedlinePlus

Partial mediation model (standardized coefficients) standardized regression coefficients are shown next to each path. QoL: quality of life (EORTC QLQ-BR23).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4225208&req=5

Figure 2: Partial mediation model (standardized coefficients) standardized regression coefficients are shown next to each path. QoL: quality of life (EORTC QLQ-BR23).

Mentions: Analysis of the effect of quality of life on depressive symptoms mediated by optimism yielded a partially mediated model fit of χ2=35.127, with a TLI of 0.964, a CFI of 0.983, and a RMSEA of 0.053, indicating good model fit. When the model was tested as a fully mediated model by removing the direct path from predictor of quality of life and adding a direct path to the criterion of depression, fit indices of the fully mediated model were χ2=45.463, TLI=0.948, CFI=0.974, and RMSEA=0.063. These results revealed that this model, too, had good fit (Table 3). However, the χ2 difference test between the partial and full mediation models resulted in χ2 (1)=10.336 (p<0.05) implying that difference in fit indices between the two models was statistically significant. The path coefficient for the partial mediating model of optimism is shown in Table 4. A path coefficient from quality of life to optimism is 0.57, from optimism to depressive symptom is -0.37, and from quality of life to depressive symptom is -0.61. These statistically significant findings led researchers to adopt the partially mediated model with a direct path from predictor of quality of life (Figure 2).


The Mediating Effects of Self-Esteem and Optimism on the Relationship between Quality of Life and Depressive Symptoms of Breast Cancer Patients.

Ha EH, Cho YK - Psychiatry Investig (2014)

Partial mediation model (standardized coefficients) standardized regression coefficients are shown next to each path. QoL: quality of life (EORTC QLQ-BR23).
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4225208&req=5

Figure 2: Partial mediation model (standardized coefficients) standardized regression coefficients are shown next to each path. QoL: quality of life (EORTC QLQ-BR23).
Mentions: Analysis of the effect of quality of life on depressive symptoms mediated by optimism yielded a partially mediated model fit of χ2=35.127, with a TLI of 0.964, a CFI of 0.983, and a RMSEA of 0.053, indicating good model fit. When the model was tested as a fully mediated model by removing the direct path from predictor of quality of life and adding a direct path to the criterion of depression, fit indices of the fully mediated model were χ2=45.463, TLI=0.948, CFI=0.974, and RMSEA=0.063. These results revealed that this model, too, had good fit (Table 3). However, the χ2 difference test between the partial and full mediation models resulted in χ2 (1)=10.336 (p<0.05) implying that difference in fit indices between the two models was statistically significant. The path coefficient for the partial mediating model of optimism is shown in Table 4. A path coefficient from quality of life to optimism is 0.57, from optimism to depressive symptom is -0.37, and from quality of life to depressive symptom is -0.61. These statistically significant findings led researchers to adopt the partially mediated model with a direct path from predictor of quality of life (Figure 2).

Bottom Line: Analyses showed that when breast cancer patients' quality of life affects depressive symptoms, the full mediation effect of self-esteem was statistically significant.Also, findings revealed there to be a significant partial mediation effect due to optimism.In addition, results suggested that optimism is also vital to psychological intervention because it functioned as partial cause of heightened depressive symptoms when breast cancer patients' quality of life affected depressive symptoms.

View Article: PubMed Central - PubMed

Affiliation: Department of Child Welfare and Child Studies, Sookmyung Women's University, Seoul, Republic of Korea.

ABSTRACT

Objective: This study investigated the mediating effects of the internal psychological factors of self-esteem and optimism on the relationship between breast cancer patients' quality of life in terms of symptoms and functioning and depressive symptoms.

Methods: The study centered on 384 breast cancer patients who had within a 24-month period received diagnosis of 0-4 stage cancer and had medical treatment. To achieve the study's purpose, the study made use of EORTC QLQ BR23, CES-D, and the Self-Esteem and Optimism Scales.

Results: Findings revealed that breast cancer patients' quality of life was negatively impacted by self-esteem and optimism, and that self-esteem and optimism impacted negatively on depressive symptoms. Analyses showed that when breast cancer patients' quality of life affects depressive symptoms, the full mediation effect of self-esteem was statistically significant. Also, findings revealed there to be a significant partial mediation effect due to optimism.

Conclusion: Study findings demonstrated that enhancing self-esteem is crucial in the psychological intervention of depressive symptoms because self-esteem functioned as the main causal factor accounting for all variation when breast cancer patients' quality of life affected depressive symptoms. In addition, results suggested that optimism is also vital to psychological intervention because it functioned as partial cause of heightened depressive symptoms when breast cancer patients' quality of life affected depressive symptoms.

No MeSH data available.


Related in: MedlinePlus