Cadeyrn J. Gaskin

On exploratory factor analysis: A review of recent evidence, an assessment of current practice, and recommendations for future use

Exploratory factor analysis (hereafter, factor analysis) is a complex statistical method that is integral to many fields of research. Using factor analysis requires researchers to make several decisions, each of which affects the solutions generated. In this paper, we focus on five major decisions that are made in conducting factor analysis: (i) establishing how large the sample needs to be, (ii) choosing between factor analysis and principal components analysis, (iii) determining the number of factors to retain, (iv) selecting a method of data extraction, and (v) deciding upon the methods of factor rotation. The purpose of this paper is threefold: (i) to review the literature with respect to these five decisions, (ii) to assess current practices in nursing research, and (iii) to offer recommendations for future use. The literature reviews illustrate that factor analysis remains a dynamic field of study, with recent research having practical implications for those who use this statistical method. The assessment was conducted on 54 factor analysis (and principal components analysis) solutions presented in the results sections of 28 papers published in the 2012 volumes of the 10 highest ranked nursing journals, based on their 5-year impact factors. The main findings from the assessment were that researchers commonly used (a) participants-to-items ratios for determining sample sizes (used for 43% of solutions), (b) principal components analysis (61%) rather than factor analysis (39%), (c) the eigenvalues greater than one rule and screen tests to decide upon the numbers of factors/components to retain (61% and 46%, respectively), (d) principal components analysis and unweighted least squares as methods of data extraction (61% and 19%, respectively), and (e) the Varimax method of rotation (44%). In general, well-established, but out-dated, heuristics and practices informed decision making with respect to the performance of factor analysis in nursing studies. Based on the findings from factor analysis research, it seems likely that the use of such methods may have had a material, adverse effect on the solutions generated. We offer recommendations for future practice with respect to each of the five decisions discussed in this paper.

Community mental health nurses, caseloads, and practices: A literature review

Deinstitutionalization, and more recently, earlier discharges from psychiatric inpatient units, have created and intensified the need for case management in community mental health. Nurses have been at the forefront of providing this case management. This literature review provides a synthesis of research and policy on the contribution of mental health nurses to community case management. The focus of this review is on the proportion of case management that mental health nurses undertake, the caseloads of case managers, and the interventions that mental health nurses most frequently perform in the community. The professional compositions of mental health case management workforces have been associated with economic imperatives, professional priorities, and the choice of case management models. The influence of mental health nurses in the case management workforce is particularly strong in the U.K. and Australia, but less so in the U.S.A. where social workers and people without mental health qualifications perform similar roles. Although heavy caseloads seem to be common among case managers, the research in this area is quite weak. The interventions that mental health nurses perform most often include case management (e.g., coordinating care), counselling, and medication management. Caring for the physical health of consumers might often be overlooked.

Effects of a clinician referral and exercise program for men who have completed active treatment for prostate cancer: A multicenter cluster randomized controlled trial (ENGAGE)

BACKGROUND : The purpose of this study was to determine the efficacy of a clinician referral and exercise program in improving exercise levels and quality of life for men with prostate cancer. METHODS : This was a multicenter cluster randomized controlled trial in Melbourne, Australia comprising 15 clinicians: 8 clinicians were randomized to refer eligible participants (n = 54) to a 12-week exercise program comprising 2 supervised gym sessions and 1 home-based session per week, and 7 clinicians were randomized to follow usual care (n = 93). The primary outcome was self-reported physical activity; the secondary outcomes were quality of life, anxiety, and symptoms of depression. RESULTS : A significant intervention effect was observed for vigorous-intensity exercise (effect size: Cohens d, 0.46; 95% confidence interval [CI], 0.09-0.82; P = .010) but not for combined moderate and vigorous exercise levels (effect size: d, 0.08; 95% CI, −0.28 to 0.45; P = .48). Significant intervention effects were also observed for meeting exercise guidelines (≥150 min/wk; odds ratio, 3.9; 95% CI, 1.9-7.8; P = .002); positive intervention effects were observed in the intervention group for cognitive functioning (effect size: d, 0.34; 95% CI, −0.02 to 0.70; P = .06) and depression symptoms (effect size: d, −0.35; 95% CI, −0.71 to 0.02; P = .06). Eighty percent of participants reported that the clinicians referral influenced their decision to participate in the exercise program. CONCLUSIONS : The clinician referral and 12-week exercise program significantly improved vigorous exercise levels and had a positive impact on mental health outcomes for men living with prostate cancer. Further research is needed to determine the sustainability of the exercise program and its generalizability to other cancer populations.The purpose of this study was to determine the efficacy of a clinician referral and exercise program in improving exercise levels and quality of life for men with prostate cancer.

Power, effects, confidence, and significance: An investigation of statistical practices in nursing research

OBJECTIVES To (a) assess the statistical power of nursing research to detect small, medium, and large effect sizes; (b) estimate the experiment-wise Type I error rate in these studies; and (c) assess the extent to which (i) a priori power analyses, (ii) effect sizes (and interpretations thereof), and (iii) confidence intervals were reported. DESIGN Statistical review. DATA SOURCES Papers published in the 2011 volumes of the 10 highest ranked nursing journals, based on their 5-year impact factors. REVIEW METHODS Papers were assessed for statistical power, control of experiment-wise Type I error, reporting of a priori power analyses, reporting and interpretation of effect sizes, and reporting of confidence intervals. The analyses were based on 333 papers, from which 10,337 inferential statistics were identified. RESULTS The median power to detect small, medium, and large effect sizes was .40 (interquartile range [IQR]=.24-.71), .98 (IQR=.85-1.00), and 1.00 (IQR=1.00-1.00), respectively. The median experiment-wise Type I error rate was .54 (IQR=.26-.80). A priori power analyses were reported in 28% of papers. Effect sizes were routinely reported for Spearmans rank correlations (100% of papers in which this test was used), Poisson regressions (100%), odds ratios (100%), Kendalls tau correlations (100%), Pearsons correlations (99%), logistic regressions (98%), structural equation modelling/confirmatory factor analyses/path analyses (97%), and linear regressions (83%), but were reported less often for two-proportion z tests (50%), analyses of variance/analyses of covariance/multivariate analyses of variance (18%), t tests (8%), Wilcoxons tests (8%), Chi-squared tests (8%), and Fishers exact tests (7%), and not reported for sign tests, Friedmans tests, McNemars tests, multi-level models, and Kruskal-Wallis tests. Effect sizes were infrequently interpreted. Confidence intervals were reported in 28% of papers. CONCLUSION The use, reporting, and interpretation of inferential statistics in nursing research need substantial improvement. Most importantly, researchers should abandon the misleading practice of interpreting the results from inferential tests based solely on whether they are statistically significant (or not) and, instead, focus on reporting and interpreting effect sizes, confidence intervals, and significance levels. Nursing researchers also need to conduct and report a priori power analyses, and to address the issue of Type I experiment-wise error inflation in their studies.

Efficacy of a referral and physical activity program for survivors of prostate cancer [ENGAGE]: Rationale and design for a cluster randomised controlled trial

AbstractBackgroundDespite evidence that physical activity improves the health and well-being of prostate cancer survivors, many men do not engage in sufficient levels of activity. The primary aim of this study (ENGAGE) is to determine the efficacy of a referral and physical activity program among survivors of prostate cancer, in terms of increasing participation in physical activity. Secondary aims are to determine the effects of the physical activity program on psychological well-being, quality of life and objective physical functioning. The influence of individual and environmental mediators on participation in physical activity will also be determined.Methods/DesignThis study is a cluster randomised controlled trial. Clinicians of prostate cancer survivors will be randomised into either the intervention or control condition. Clinicians in the intervention condition will refer eligible patients (n = 110) to participate in an exercise program, comprising 12 weeks of supervised exercise sessions and unsupervised physical activity. Clinicians allocated to the control condition will provide usual care to eligible patients (n = 110), which does not involve the recommendation of the physical activity program. Participants will be assessed at baseline, 12 weeks, 6 months, and 12 months on physical activity, quality of life, anxiety, depression, self-efficacy, outcome expectations, goals, and socio-structural factors.DiscussionThe findings of this study have implications for clinicians and patients with different cancer types or other chronic health conditions. It will contribute to our understanding on the potential impact of clinicians promoting physical activity to patients and the long term health benefits of participating in physical activity programs.Trial registrationAustralia and New Zealand Clinical Trials Register (ANZCTR): ACTRN12610000609055 Deakin University Human Research Ethics Approval 2011-085

The Relationships between Attitudes toward Seclusion and Levels of Burnout, Staff Satisfaction, and Therapeutic Optimism in a District Health Service

The main purpose of this study was to investigate the relationships between attitudes toward seclusion and levels of burnout, staff satisfaction, and therapeutic optimism. Staff at one district health service inpatient unit (n = 54) completed surveys on their attitudes toward seclusion and levels of burnout, staff satisfaction, and therapeutic optimism. Several moderately large correlations were found between perceiving the patients as feeling punished by seclusion and intrinsic satisfaction (rs = –.45, p = .001), and between patients asking to go to the seclusion room and personal accomplishment (rs = –.39, p = .002). In general, however, most correlations were small or negligible in size. The influence of nurses on the practice of seclusion was clear, with 72% of participants indicating it was nurses who most often make decisions regarding seclusion. Some participants appear to have a broad interpretation of when seclusion should be used, raising doubts about whether it is being employed solely as a measure of last resort. Given their high level of involvement in seclusions, nurses need to be actively involved in organisation-wide initiatives to reduce the use of this practice.

Women's explanations for urinary incontinence, their management strategies, and their quality of life during the postpartum period

PURPOSE Although pregnancy is a risk factor for urinary incontinence (UI), minimal information is available to help clinicians understand postpartum womens experiences of UI. Our aim was to explore postnatal womens explanations for UI, strategies for managing and dealing with UI, rationale for not doing anything about UI, and its influence on their quality of life. DESIGN Cross-sectional survey. SUBJECTS AND SETTING The participants were 75 women who had given birth to live children at Viborg Hospital in Denmark during a 3-month period from November 2002 to January 2003 and who had experienced UI since giving birth. METHODS UI questionnaires were mailed to women who had given birth at Viborg Hospital during a 3-month period. The questionnaire included the Urogenital Distress Inventory, the Incontinence Impact Questionnaire, and the General Continence Questionnaire. A follow-up letter was sent to potential participants 2 weeks after the initial mailing. RESULTS The most frequently reported lower urinary tract symptoms were small amounts of urine leakage (59%) and leakage related to physical activity, coughing, or sneezing (55%). Half the women reporting these symptoms indicated that they were moderately or greatly bothered by them. Living with UI affected the willingness of some women to go to places where they were unsure about the availability of toilets (27%), as well as the way in which they dressed (31%). Some women reported diminished ability to have sexual relations (23%) and reduced involvement in physical and recreational activities (23%). UI was associated with feelings of frustration (25%) and embarrassment (25%). Most participants (76%) perceived that they had become incontinent due to weakened pelvic floor muscles and because they had not performed sufficient pelvic floor muscle exercises. The most common management strategies for UI were more frequent toileting (64%) and pad use (56%). Some women (24%) reported that they had done nothing about their UI. CONCLUSION Given the profound impact UI usually exerts on the lives of postpartum women and the common use of ineffective management strategies, healthcare clinicians need to actively screen for and treat this condition.

The role of informal caregivers during cancer patients’ recovery from chemotherapy

AIMS (i) To investigate the availability, perceived importance and roles of informal caregivers in the recovery of patients treated at day oncology centres and (ii) identify differences between patients with and without informal caregivers in the extent to which they experienced symptoms, and the level of bother symptoms caused. METHOD Patients from three Australian hospitals (n = 122) were recruited during cycles 1 or 2 of adjuvant chemotherapy. Participants completed a modified version of the Rotterdam Symptom Checklist (RSCL) each day for 5 days after chemotherapy. A telephone interview conducted 10 days post-treatment explored the availability, importance and roles of caregivers. During the interview, participants also completed the modified RSCL in which they were asked about the extent to which they experienced, and were bothered by, each symptom over the prior 5 days combined. RESULTS Overall, 71% of participants had an informal caregiver in the 5 days postchemotherapy, commonly a partner. More women (71%) than men (48%) had a caregiver (p < 0.05). Caregivers were perceived to be highly important; they were more important for women than men (U = 213.50, p < 0.01). The most common assistance caregivers provided was meal preparation and emotional support and companionship. On days 6-10 postchemotherapy, the extent to which overall physical symptoms were experienced was higher for patients with a caregiver than without (U = 987.50, p < 0.05); similarly their symptoms caused more bother (U = 966.00, p < 0.01). CONCLUSIONS These findings highlighted the importance of informal caregivers to patients postchemotherapy. It is imperative that patients are informed of the importance of this support so a caregiver can be arranged, if possible. Understanding the needs of patients following chemotherapy would enable health professionals to advise patients, with or without caregivers, how to best prepare for and manage their recovery at home.

Clinical placements in mental health: a literature review

Gaining experience in clinical mental health settings is central to the education of health practitioners. To facilitate the ongoing development of knowledge and practice in this area, we performed a review of the literature on clinical placements in mental health settings. Searches in Academic Search Complete, CINAHL, Medline and PsycINFO databases returned 244 records, of which 36 met the selection criteria for this review. Five additional papers were obtained through scanning the reference lists of those papers included from the initial search. The evidence suggests that clinical placements may have multiple benefits (e.g. improving students’ skills, knowledge, attitudes towards people with mental health issues and confidence, as well as reducing their fears and anxieties about working in mental health). The location and structure of placements may affect outcomes, with mental health placements in non-mental health settings appearing to have minimal impact on key outcomes. The availability of clinical placements in mental health settings varies considerably among education providers, with some students completing their training without undertaking such structured clinical experiences. Students have generally reported that their placements in mental health settings have been positive and valuable experiences, but have raised concerns about the amount of support they received from education providers and healthcare staff. Several strategies have been shown to enhance clinical placement experiences (e.g. providing students with adequate preparation in the classroom, implementing learning contracts and providing clinical supervision). Educators and healthcare staff need to work together for the betterment of student learning and the healthcare professions.

MEDICINE NON-ADHERENCE IN KIDNEY TRANSPLANTATION

BACKGROUND The increasing prevalence of chronic kidney disease, the relative shortage of kidney donors and the economic- and health-related costs of kidney transplant rejection make the prevention of adverse outcomes following transplantation a healthcare imperative. Although strict adherence to immunosuppressant medicine regimens is key to preventing kidney rejection, evidence suggests that adherence is sub-optimal. Strategies need to be developed to help recipients of kidney transplants adhere to their prescribed medicines. FINDINGS This review has found that a number of factors contribute to poor adherence, for example, attitudes towards medicine taking and forgetfulness. Few investigations have been conducted, however, on strategies to enhance medicine adherence in kidney transplant recipients. Strategies that may improve adherence include pharmacist-led interventions (incorporating counselling, medicine reviews and nephrologist liaison) and nurse-led interventions (involving collaboratively working with recipients to understand their routines and offering solutions to improve adherence). Strategies that have shown to have limited effectiveness include supplying medicines free of charge and providing feedback on a participants medicine adherence without any educational or behavioural interventions. CONCLUSION Transplantation is the preferred treatment option for people with end-stage kidney disease. Medicine non-adherence in kidney transplantation increases the risk of rejection, kidney loss and costly treatments. Interventions are needed to help the transplant recipient take all their medicines as prescribed to improve general well-being, medicine safety and reduce healthcare costs.