Effects of stress, health competence, and social support on depressive symptoms after cardiac hospitalization

Understanding mHealth Adoption and Lifestyle Improvement: An Empirical Test of the Antecedents and Mediating Mechanisms

The potential of using mobile phones for health care service delivery has been well acknowledged. Despite that mobile health (mHealth) related research has proliferated in the past decade, mHealth is still in the fledgling stage with a low adoption rate. There is a research gap in understanding factors influencing mHealth adoption and examining the effects of mHealth use on health outcomes. The purpose of this study was thus to explore influential factors of mHealth use, and test mediation pathways through which mHealth use impacts healthy lifestyle behaviors (e.g. sleep, exercise, and social participation). Survey results from 432 online participants illustrate that performance expectancy, social influence, support conditions, and perceived reliability were significantly associated with mHealth use. However, the impact of effort expectancy on mHealth use was statistically nonsignificant. Moreover, the results indicate that mHealth use can not only contribute to the improvement of healthy lifestyle behaviors directly but also exert an impact through the mediating effect of health competence. Knowing what factors motivate people's mHealth use and how mHealth use contributes to lifestyle improvement can help trigger interventions to boost mHealth adoption and improve public health. Implications and limitations are discussed.

Hospitalization's association with depression in adults over 50 years old: does living arrangement matter? Findings from the Health and Retirement Study

OBJECTIVES

To examine how living arrangements are associated with depressive symptoms in late middle-life and older adults following hospitalization within the last two years.

DESIGN

We used the 2016 wave of the Health and Retirement Study (HRS), a nationally representative survey of adults over 50 years old living in the United States.

METHODS

The dependent variable was whether HRS participants screened positive for having depressive symptoms. The primary independent variable was self-reported hospitalization in the prior two years. We stratified bivariate analyses and multivariate logistic regressions by living arrangement to examine hospitalizations' association with depressive symptoms.

RESULTS

Depressive symptoms were less prevalent among participants who were married or partnered and living with a partner (14.0%) compared to those who were not married or partnered and were living with others (31.7%) and were not married or partnered and were living alone (27.8%). In multivariate analyses stratified by living arrangement, however, hospitalization was associated with depressive symptoms for those married or partnered and living with a partner (OR = 1.39, 95% CI: 1.14-1.69) but not for those who were not married and living with other(s) (OR = 0.88, 95% CI: 0.65-1.18) and not married or partnered and living alone (OR = 1.06, 95% CI: 0.82-1.36).

CONCLUSIONS

Late middle-life and older adults residing with spouses or cohabitating appear at risk for having depressive symptoms following a hospitalization. A better understanding of how relationships and living arrangements may affect depression risk in the context of an acute medical illness is needed to identify points of intervention.

Race Moderates the Relationship Between Perceived Social Support and Self-care Confidence in Patients With Heart Failure

BACKGROUND

African Americans are at the highest risk of developing heart failure (HF) compared with other races and are hospitalized at 7 to 8 times the rate of Whites. Poor overall self-care, low self-care confidence, and lower levels of perceived social support are factors related to increased risk for hospitalizations in HF. Yet, limited evidence is available regarding the factors that may differentially impact self-care confidence by race in patients with HF.

OBJECTIVE

The aim of this study was to examine to what extent race moderates the relationship between perceived social support and self-care confidence.

METHOD

This is a secondary analysis of cross-sectional data from African American and White patients with HF in North America (n = 429). Patients completed the Multidimensional Scale of Perceived Social Support and the Self-Care Confidence Scale of the Self-Care of Heart Failure Index. A moderation analysis was conducted using hierarchal linear regression.

RESULTS

Sample mean age was 60.8 ± 11.5 years, 22.4% were African American, and 54.7% were in New York Heart Association class I or II. Moderation analyses yielded a significant interaction of perceived social support and race, showing White patients, not African Americans, have significantly different self-care confidence scores depending on level of social support: White, b = 0.224, 95% confidence interval [0.046-0.094], t = 5.65, and P < .001; African American, b = -0.776, 95% confidence interval [-0.049 to 0.060], t = 0.212, and P = .832.

CONCLUSIONS

Our findings show a variable effect of perceived social support on self-care confidence as a function of race, suggesting the need for further research to develop and test interventions tailored to race and levels of social support in HF.

Depression and Hospital Readmissions in Patients with Heart Failure

Depression increases the risk of mortality in patients with heart failure (HF). Less is known about whether depression predicts multiple readmissions or whether multiple hospitalizations worsen depression in patients with HF. This study aimed to test the hypotheses that depression predicts multiple readmissions in patients hospitalized with HF, and conversely that multiple readmissions predict persistent or worsening depression. All-cause readmissions were ascertained over a 2-year follow-up of a cohort of 400 patients hospitalized with HF. The Patient Health Questionnaire-9 was used to assess depression at index and 3-month intervals. At enrollment in the study, 21% of the patients were mildly depressed and 22% were severely depressed. Higher Patient Health Questionnaire-9 depression scores predicted a higher rate of readmissions (adjusted hazard ratio 1.02, 95% confidence interval 1.00 to 1.04, p = 0.03). The readmission rate was higher in those who were severely depressed than in those without depression (p = 0.0003), but it did not differ between patients who were mildly depressed and patients without depression. Multiple readmissions did not predict persistent or worsening depression, but younger patients in higher New York Heart Association classes were more depressed than other patients. Depression is an independent risk factor for multiple all-cause readmissions in patients hospitalized with HF. Severe depression is a treatable psychiatric co-morbidity that warrants ongoing clinical attention in patients with HF.

Left Ventricular Dysfunction and Depression in Hospitalized Patients with Heart Failure

OBJECTIVE

This study examined whether the severity of left ventricular systolic dysfunction is associated with depression in patients with heart failure (HF). Other factors were also studied to identify independent correlates of depression in HF.

METHODS

The sample consisted of 400 hospitalized patients with HF. Left ventricular ejection fraction and other medical data were obtained from medical records. Depression and other psychosocial characteristics were assessed by an interview and questionnaires. Proportional odds models were used to test the relationships of these characteristics to Diagnostic and Statistical Manual of Mental Disorders (Fifth Edition) depressive disorders, and analysis of covariance was used to test relationships with continuous measures of depression in secondary models.

RESULTS

The models produced no evidence of an association between left ventricular ejection fraction and depression. The adjusted odds ratio (95% confidence interval) was 1.00 (0.98-1.01; p = .87) for depression diagnosis. Analysis of covariance estimates (standard errors) were -0.01 (0.02; p = .54) for the Hamilton Rating Scale for Depression and -0.01 (0.01; p = .59) for the Patient Health Questionnaire. The odds of depression were higher in African American patients and in those with high levels of anxiety or stress. Other characteristics that have been associated with depression in previous studies, including sex and age, were not consistently associated with depression in this study.

CONCLUSIONS

There is no relationship between the severity of left ventricular systolic dysfunction and depression in hospitalized patients with HF. In contrast, African American patients and those with a high level of anxiety or perceived stress are more likely than other patients to have a comorbid depressive disorder.

Effects of Depression on Heart Failure Self-Care

BACKGROUND

Depression has been identified as a barrier to effective heart failure self-care, but recent studies suggest that the relationship between depression and self-care is more complex than was previously believed. This study was designed to clarify the relationship between depression and self-care in hospitalized patients with HF.

METHODS AND RESULTS

During hospitalization with a confirmed clinical diagnosis of HF, 400 patients completed a structured interview to diagnose Diagnostic and Statistical Manual, 5th edition (DSM-5) depressive disorders, the Patient Health Questionnaire (PHQ-9) depression questionnaire, the Self-Care of Heart Failure Index (SCHFI), and several psychosocial questionnaires. Multivariable models were fitted to each SCHFI scale; separate models were run with DSM-5 disorders and PHQ-9 depression scores. Higher PHQ-9 depression scores were independently associated with lower (worse) scores on the SCHFI Maintenance (P < .05), Management (P < .01), and Confidence (P < .01) scales. No independent associations with DSM-5 depressive disorders were detected. Measures of perceived stress, anxiety, and low perceived social support were also significantly associated with poor HF self-care.

CONCLUSIONS

Patients with a combination of psychosocial problems, including symptoms of depression, stress, anxiety, and inadequate social support, may be more likely than other patients to display difficulties with HF self-care that can increase their risk for hospitalization. Research is needed on "broad-spectrum" psychosocial interventions for patients with HF self-care deficits.

Depression Levels Following Discharge Predict Quality of Life in Heart Disease Patients

Abstract Depression and stress have been related with poor Health Related Quality of Life (HRQoL) prognosis. However, it is not clear when these depressive symptoms should be measured. A sample of 177 Coronary Heart Disease patients were followed for 15 months aimed to compare the effect of depression and stress measure at time of hospitalization and three months later on the physical HRQoL trajectory. Linear growth models’ results showed that depression and stress after discharge are negatively correlated with the physical HRQoL and depressive symptoms negatively affect the prognosis of these patients.

Social support buffers the negative effects of stress in cardiac patients: a cross-sectional study with acute coronary syndrome patients

Cardiac patients who have social support generally have better prognosis than patients who lack social support. Several theoretical mechanisms have been proposed to explain this protective effect, including the capacity of social support to buffer the negative effects of stress. We tested this buffering effect in a study of patients hospitalized for acute coronary syndrome (ACS) in Spain. Several days after the cardiac event patients answered a questionnaire measuring stressful events during their lifetime, perceived social support around the time of the cardiac event, and depression symptoms in the past week. Results showed that stressful life events were related to depressive symptoms and worse renal function post-ACS only among patients with low perceived social support. Among patients who reported enough social support, lifetime stress was not related to depressive symptoms. No similar effects were observed on other prognostic indicators such as troponin levels or the number of obstructed arteries. These results suggest that social support can buffer the negative effects of stress on the mental and physical well-being of cardiac patients.