Using dynamic factor analysis to provide insights into data reliability in experience sampling studies.

The past 2 decades have seen increasing use of experience sampling methods (ESMs) to gain insights into the daily experience of affective states (e.g., its variability, as well as antecedents and consequences of temporary shifts in affect). Much less attention has been given to methodological challenges, such as how to ensure reliability of test scores obtained using ESM. The present study demonstrates the use of dynamic factor analysis (DFA) to quantify reliability of test scores in ESM contexts, evaluates the potential impact of unreliable test scores, and seeks to identify characteristics of individuals that may account for their unreliable test scores. One hundred twenty-seven participants completed baseline measures (demographics and personality traits), followed by a 7-day ESM phase in which positive and negative state affect were measured up to 6 times per day. Analyses showed that although at the sample level, scores on these affect measures exhibited adequate levels of reliability, up to one third of participants failed to meet conventional standards of reliability. Where these low reliability estimates were not significantly associated with personality factors, they could-in some cases-be explained by model misspecification where a meaningful alternative structure was available. Despite these potential differences in factor structure across participants, subsequent modeling with and without these "unreliable" cases showed similar substantive results. Hence, the present findings suggest typical analyses based on ESM data may be robust to individual differences in data structure and/or quality. Ways to augment the DFA approach to better understand unreliable cases are discussed. (PsycINFO Database Record

The role of technology in Australian youth mental health reform.

This paper describes the extent and nature of Internet use by young people, with specific reference to psychological distress and help-seeking behaviour. It draws on data from an Australian cross-sectional study of 1400 young people aged 16 to 25 years. Nearly all of these young people used the Internet, both as a source of trusted information and as a means of connecting with their peers and discussing problems. A new model of e-mental health care is introduced that is directly informed by these findings. The model creates a system of mental health service delivery spanning the spectrum from general health and wellbeing (including mental health) promotion and prevention to recovery. It is designed to promote health and wellbeing and to complement face-to-face services to enhance clinical care. The model has the potential to improve reach and access to quality mental health care for young people, so that they can receive the right care, at the right time, in the right way.

Intradialytic Laughter Yoga therapy for haemodialysis patients: a pre-post intervention feasibility study.

BACKGROUND: Laughter Yoga consists of physical exercise, relaxation techniques and simulated vigorous laughter. It has been associated with physical and psychological benefits for people in diverse clinical and non-clinical settings, but has not yet been tested in a haemodialysis setting. The study had three aims: 1) to examine the feasibility of conducting Laughter Yoga for patients with end stage kidney disease in a dialysis setting; 2) to explore the psychological and physiological impact of Laughter Yoga for these patients; and 3) to estimate the sample size required for future research. METHODS: Pre/post intervention feasibility study. Eighteen participants were recruited into the study and Laughter Yoga therapists provided a four week intradialytic program (30-min intervention three times per week). Primary outcomes were psychological items measured at the first and last Laughter Yoga session, including: quality of life; subjective wellbeing; mood; optimism; control; self-esteem; depression, anxiety and stress. Secondary outcomes were: blood pressure, intradialytic hypotensive episodes and lung function (forced expiratory volume). Dialysis nurses exposed to the intervention completed a Laughter Yoga attitudes and perceptions survey (n = 11). Data were analysed using IBM SPSS Statistics v22, including descriptive and inferential statistics, and sample size estimates were calculated using G*Power. RESULTS: One participant withdrew from the study for medical reasons that were unrelated to the study during the first week (94 % retention rate). There were non-significant increases in happiness, mood, and optimism and a decrease in stress. Episodes of intradialytic hypotension decreased from 19 pre and 19 during Laughter Yoga to 4 post Laughter Yoga. There was no change in lung function or blood pressure. All nurses agreed or strongly agreed that Laughter Yoga had a positive impact on patients' mood, it was a feasible intervention and they would recommend Laughter Yoga to their patients. Sample size calculations for future research indicated that a minimum of 207 participants would be required to provide sufficient power to detect change in key psychological variables. CONCLUSIONS: This study provides evidence that Laughter Yoga is a safe, low-intensity form of intradialytic physical activity that can be successfully implemented for patients in dialysis settings. Larger studies are required, however, to determine the effect of Laughter Yoga on key psychological variables. TRIAL REGISTRATION: Australian New Zealand Clinical Trials Registry - ACTRN12614001130651 . Registered 23 October 2014.

THE HAPPINESS AND SUBJECTIVE WELL-BEING OF PEOPLE ON HAEMODIALYSIS.

BACKGROUND: Happiness is a construct that has been gaining more prominence in both social and health research. The measure of happiness, subjective well-being, has not been rigorously explored in the end-stage kidney disease (ESKD) population. OBJECTIVES: To measure the subjective well-being of people with ESKD on haemodialysis and to compare their subjective well-being with a general population cohort. DESIGN: A cross-sectional design measuring the subjective well-being of an Australian haemodialysis cohort compared with a non-dialysis age-matched cohort. PARTICIPANTS: The haemodialysis cohort (N = 172), recruited from eight dialysis centres, had a mean age of 64.04 years (SD = 14.82) and included 104 males (60.5%) and 66 (38.4%) females. The non-dialysis cohort (N = 200), randomly extracted from the 2012 Australian Unity Wellbeing Index, had a mean age of 63.97 (SD = 14.68) and included 101 males (50.5%) and 99 females (49.5%). MEASUREMENT: Subjective well-being was measured using the Personal Wellbeing Index. This seven-item measure rates satisfaction with life in seven domains: standard of living, health, achievements in life, relationships, safety, community and future security. RESULTS: The haemodialysis cohort reported lower general life satisfaction, life achievements, relationship and personal safety compared to the general population. There were no differences between the two groups for health, community and future security. Standard of living and satisfaction with life achievements carried higher importance in subjective well-being compared with health satisfaction CONCLUSION: Subjective well-being can be an important indicator of people's life quality to be considered by clinicians and nephrology researchers in future studies.

The dyadic interaction of relationships and disability type on informal carer subjective well-being.

PURPOSE: Care-related factors have frequently been associated with elevated levels of distress and diminished subjective well-being. However, these variables have traditionally been considered independently. The objectives of this study were to explore the subjective well-being of informal carers in Australia and to specifically examine the effect of the dyadic interaction between the caring relationship and type of disability on the subjective well-being of informal carers. METHODS: Informal carers (n = 4,096) completed the Personal Wellbeing Index (PWI) and Depression and Stress Scales. Analysis of covariance was used to compare the subjective well-being of carers to the general population while controlling for socio-demographic factors. To examine the dyadic relationship, a multivariate analysis of covariance was employed. RESULTS: After socio-demographic variables were controlled, informal carers reported significantly lower PWI scores compared to the general population. The results of the multivariate analysis of covariance revealed a significant interaction between the caring relationship and the type of disability being managed on subjective well-being. No differences were found for symptoms of depression and stress. CONCLUSIONS: The findings of this study imply that the detrimental effect of caring on subjective well-being is magnified for carers who support a child with a mental illness or multiple types of disabilities. These carers displayed the lowest levels of subjective well-being, highlighting the dyadic effects of care-related variables. Consideration of these factors is essential to target effective intervention programs for those most at risk of diminished well-being.