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Randomized Institutional Isomorphism - Evidence from AfghanistanBeath, Andrew January 2012 (has links)
The dissertation compiles a series of essays which describes effects of various institutional variations randomized across a sample of 500 villages in Afghanistan in 2007. The first essay examines the institutional effects of the creation of democratically-elected, gender-balanced village development councils across 474 village councils. The creation of councils is found to have no effects on the structure and function of local governance or on how male villagers perceive local governance quality. However, council creation provokes increased local governance activity among paramilitary commanders – who experience broad-based improvements in public perceptions – and improves perceptions of local governance quality among women. The results indicate that externally-imposed de jure reforms do not substantially alter institutional outcomes, but may provoke countervailing responses by political authorities seeking to benefit from the institutional change. The second essay examines the effects of direct democracy on the alignment between public resource allocation decisions and citizen preferences. Using data from 250 villages, the study compares decision outcomes produced by secret-ballot referenda with outcomes produced by public meetings led by an elected village council. The results indicate that while elites do exert influence over outcomes produced by public meetings, their preferences do not determine the outcomes of referenda, which are influenced primarily by citizen preferences. Referenda are also found to improve citizen satisfaction, which is particularly low where elites exert undue influence over outcomes. The third essay examines whether the inclusion of villages in Afghanistan‘s largest development program affects counter-insurgency outcomes, such as individual perceptions of well-being, attitudes towards government, and the occurrence of violent incidents in surrounding areas. The program is found to affect all three measures, but only in areas with low levels of initial violence. The results indicate that development programs can limit the onset of insurgencies in relatively secure areas, but are not effective in improving attitudes to government and reducing violence where insurgents are already active. / Government
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Cognitive behavior therapy for anxiety disorders in youth: Treatment specificity and mediation effectsHernandez, Ileana 11 June 2014 (has links)
The present study investigated the efficacies of Individual CBT (ICBT), Parent Relationship Skill Training (RLST, which targets increasing parental acceptance of youth and increasing autonomy granting) and Parent Reinforcement Skills Training (RLST, which targets increasing parental positive reinforcement and decreasing negative reinforcement). The specific aims were to examine treatment specificity and mediation effects of parenting variables. ICBT was used as a baseline comparison condition.
The sample consisted of 253 youth (ages 5-16 years; M = 9.38; SD = 2.42) and their parents. To examine treatment outcome and specificity, the data were analyzed using analysis of variance within a structural equation modeling framework. Mediation was analyzed via structural equation modeling using MPlus.
Results indicated that ICBT, RLST, and RFST produced positive treatment outcomes across all indices of change (i.e., clinically significant improvement, anxiety symptom reduction) and across all informants (i.e., youths and parents). RLST was associated with incremental reduction in youth anxiety symptoms beyond ICBT, as per youth report. Treatment specificity effects were found for participants in RFST in terms of parental reinforcement, as per parent report only. Treatment mediation was not found for any of the hypothesized parenting variables (i.e., parental acceptance, parental autonomy granting, parental reinforcement). The results support the use of CBT involving only the youth and the parent and youth together for treating youth anxiety. The findings’ implications are further discussed in terms of the need to conduct further meditational treatment outcome designs in order to continue to advance theory and research in youth anxiety treatment.
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Development and Evaluation of a Leadership Intervention to Influence Nurses’ Use of Clinical Guideline RecommendationsGifford, Wendy A. January 2011 (has links)
Leadership is important to quality improvement initiatives in healthcare. However, few studies have evaluated leadership interventions to enhance nurses’ use of guideline recommendations in the field of knowledge translation.
Purpose: To develop and evaluate an intervention designed to operationalize a leadership strategy composed of relations, change, and task-orientated leadership behaviours, and to examine its influence on nurses’ use of guideline recommendations in home-care nursing.
Design: Sequential mixed methods pilot study with post-only cluster randomized controlled trial.
Methods
Phase I: Intervention Development
1. A participatory approach was used at a community healthcare organization with 23 units across the province of Ontario, Canada. The guideline selected was developed by the Registered Nurses’ Association of Ontario for the assessment and management of foot ulcers for people with diabetes.
2. Integrative literature review, qualitative interviews, and baseline chart audits were conducted.
3. Four units were randomized to control or experimental groups.
4. Clinical and management leadership teams participated in a 12-week intervention consisting of printed materials, interactive workshop, and teleconferences. Participants received summarized chart audit data, identified priority indicators for change, and created a team leadership action plan to address barriers and influence guideline use.
Phase II: Evaluation
5. Chart audits compared differences in nursing process and patient outcomes. Primary outcome: eight-item nursing assessment score.
6. Qualitative interviews evaluated the intervention and leadership behaviours.
Results: No significant difference was found in the primary outcome. A significant difference was observed in nurses’ documentation of five priority indicators chosen by the experimental groups (p=.02). Gaps in care included: 53%, 76%, and 94% of patients not assessed for ulcer depth, foot circulation, or neuropathy (respectively); 75% and 93% did not receive wound debridement or hydrogel dressings.
Receiving data to identify priority indicators for change and developing a leadership action plan were reported as useful to guideline implementation. The experimental group described using more relations-oriented leadership behaviours conducting audit and feedback, and sending reminders.
Conclusion: Findings from this pilot study suggest that leadership is a team process involving relations, change, and task-oriented behaviours enacted by managers and clinical leaders. A leadership model is proposed as a beginning taxonomy to inform future leadership intervention studies.
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Challenges in the Ethical Conduct and Ethics Review of Cluster Randomized Trials: A Survey of Cluster Randomization TrialistsChaudhry, Shazia Hira January 2012 (has links)
Unique characteristics of cluster randomized trials (CRTs) complicate the interpretation of standard research ethics guidelines. Variable interpretation by research ethics committees may further complicate review and conduct. An international web-based survey was administered to corresponding authors of 300 randomly sampled CRT publications. We investigated ethics review and consent practices, investigator experiences with ethics review, and the perceived need for CRT-specific ethics guidelines. The response rate was 64%. Ethics review and consent were under-reported in publications. Ethics approval was obtained in 91%, and consent from individual and cluster level participants in 79% and 82% of trials. Consent varied by level of experimental intervention, data collection, and cluster size. Respondents cited variability among ethics committees (46%), and negative impacts of ethics review on their studies (38%). The majority perceived a need for ethics guidelines (73%), and guidance for ethics committees (70%). CRT-specific ethics guidelines are required to ensure practices meet ethical standards.
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Gain-Framed Messaging to Promote Adult Sport: An Exploration of the Effects of Efficacy-Enhancing Messages on Psychological and Behavioural OutcomesLittlejohn, Meagan January 2016 (has links)
To understand how to better stimulate adult sport engagement, this study investigated effects of gain-framed messages (GFM; Rothman & Updegraff, 2010) on psychological/behavioural outcomes, with or without efficacy-enhancing messages (Latimer et al., 2010). Eligible adults (30-69 years-old) were randomly assigned to one of two experimental conditions (‘GFM alone’ or ‘GFM plus efficacy-enhancing messages’), or a control condition. Participants (N = 232; 62.5% female) completed baseline/screening measures, watched their messaging intervention and reported outcomes one-week later (Time 2), and responded one-month later (Time 3). Comparing the experimental conditions showed non-significant differences for all outcomes, indicating no added benefit of efficacy-enhancing messages. Collapsing the experimental groups and comparing against the control showed significant group-by-time interactions for three ‘outcome expectancies’ (travel, social affiliation, stress relief), with reports higher among experimental participants. Results also indicated that moderate-to-vigorous physical activity significantly decreased at Time 3 within the control, but remained constant among experimental participants.
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Addressing Fear of Cancer Recurrence: A Cognitive-Existential Psychosocial Intervention for Cancer SurvivorsTomei, Christina January 2017 (has links)
Fear of cancer recurrence (FCR) is defined as “fear, worry, or concern relating to the possibility that cancer will come back or progress (Lebel et al., 2016, p. 3266). FCR is the most frequently reported concern identified among cancer survivors (Baker, Denniston, Smith, & West, 2005; Lebel, Rosberger, Edgar, & Devins, 2007). Although approximately 50% of cancer survivors experience moderate-to-high levels of FCR (Simard et al., 2013), few psychosocial interventions exist that directly target this construct. The overarching study objectives were: (a) to adapt a manualized, 6-week, cognitive-existential group therapy intervention for FCR to an individual format; (b) to pilot-test the feasibility, acceptability, and satisfaction of this individual intervention on n=3 participants; and (c) to further pilot-test the efficacy of the individual intervention on n=25 participants, via a randomized controlled trial (RCT). In study 1, n=3 cancer survivors (1 male, 2 females) completed the one-on-one therapy intervention for the psychological treatment of FCR. Sessions were 60-90 minutes long, and included cognitive restructuring exercises, behavioural experiments, relaxation techniques, existential processing of the here-and-now, and finding meaning in life post-diagnosis. Participants completed questionnaire packages throughout the intervention and an exit interview to determine their overall feedback on the intervention. Quantitative analyses revealed downwards trends in fear of cancer recurrence and cancer-specific distress across participants. Qualitative analyses of the exit interviews revealed that all participants found the intervention useful, and that the sessions had favourable pacing and length.
In study 2, the FCR intervention was further pilot-tested via an RCT. Twenty-five female cancer survivors were randomized to an experimental group or a wait-list control group. Sessions included cognitive restructuring techniques, behavioural experiments, confronting existential distress, and relaxation exercises. Nineteen women (n=9 intervention, n=10 control) completed the 6-week therapy intervention, and completed questionnaire packages at pre-, post- and 3-month follow-up. Between-within ANOVAs revealed significant interactions in the primary outcome measure of FCR, and secondary outcome measures of cancer-specific distress and uncertainty in illness for participants in the experimental group. Repeated measures ANOVAs revealed reductions in FCR, cancer-specific distress, uncertainty in illness, reassurance-seeking, cognitive avoidance, and intolerance of uncertainty, and revealed improvements in positive reinterpretation and growth, use of emotional support and mental health (improved quality of life) for participants in the experimental group, as compared to the wait-list control group. The variables that changed either maintained or improved at follow-up. Results from this study demonstrate promising results in addressing FCR in cancer survivors via a cognitive-existential intervention. Future research should continue investigating the specific therapeutic ingredients that are most effective for the psychological treatment of FCR.
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Alternative Endpoints and Analysis Techniques in Kidney Transplant TrialsFergusson, Nicholas Anthony January 2017 (has links)
Clinical trials in kidney transplantation suffer from several major issues including:
1) Unfeasibility due to low short-term event rates of hard outcomes and 2) Reliance on a composite outcome that consists of unequal endpoints that may generate misleading results. This thesis attempts to explore and apply methods to solve these issues and ultimately, improve kidney transplantation trials.
We present a secondary analysis of the ACE trial in kidney transplant using composites with alternative graft function surrogate endpoints. Typically, kidney transplant trials—including the ACE trial— use a time-to-event composite of death, end-stage renal disease (ESRD), and doubling of serum creatinine. Instead of doubling of serum creatinine, we investigated the use of percentage declines of estimate glomerular filtration rate (eGFR) within a time-to-event composite of death and ESRD. Additionally, we present an application of an innovative analysis method, the win ratio approach, to the ACE trial as a way of lessening concerns associated with unequal composite endpoints.
Composites of death, ESRD, and either a 40%, 30% or 20% decline in eGFR did not alter original ACE trial results, interpretations, or conclusions. The win ratio approach, and the presentation of a win ratio, generated very comparable results to a standard time-to-event analysis while lessening the impact of unequal composite endpoints and making fewer statistical assumptions. This research provides a novel, trial-level application of alternative endpoints and analysis techniques within a kidney transplant trial setting.
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Elektroakupunktur som behandlingsmetod vid ländryggssmärta : En litteraturstudie / Electroacupuncture as treatment for low back pain : A literature reviewFilin, Tex, Pierce, Victor January 2017 (has links)
Bakgrund: Akupunktur är en gammal behandlingsmetod, beräknad ungefär 4100 år gammal och kommer från Kina. Elektroakupunktur är en något nyare behandlingsmetod där man för ström mellan nålarna. Denna behandlingsmetod används främst av fysioterapeuter. Behandlingarna som fysioterapeuten utför kräver ett vetenskapligt stöd, därför finns ett behov att granska den litteratur som behandlingsmetoden grundas på. Inom forskning och verksamhet använder man olika namn för denna metod, både “electroacupuncture” och “percutaneouselectricalnervestimulation” (PENS). Ryggsmärta är ett vanligt problem bland världens befolkning, det är beräknat att upptill 70% av befolkningen kommer någon gång i sitt liv uppleva ryggssmärta. Det är även beräknat att vara den vanligaste smärtförekomsten. Om elektroakupunktur fungerar mot ländryggssmärta kan terapeuter använda denna behandlingsmetod. Syfte: Syftet med denna studie var att undersöka vilket vetenskapligt stöd det finns för elektroakupunktur som behandlingsmetod vid ländryggssmärta. Metod: En systematisk sökning utfördes i databaserna CinAHL, PubMed, PEDro, Scopus och Web of Science angående elektroakupunktur och ländryggssmärta. Sökorden som användes var “electroacupuncture”, “lowback pain ”, “percuteaneous electricalnervestimulation” och “randomized controlled trial”. Resultat: Sammanlagt 15 RCT – studier inkluderades i denna studie. Sammanlagt 11 av 15 studier fann signifikanta skillnader i resultat. 8 studier behandlade kronisk ländryggssmärta, 4 behandlade diskogena besvär och resterande 3 behandlade andra ryggdiagnoser. Elektroakupunktur har visat ge en smärtlindring vid ländryggssmärta. Konklusion: Samtliga inkluderade studier fann smärtlindring av behandlingen, dock visade inte alla signifikanta skillnader. Det finns även metodologiska brister i den befintliga litteraturen vilket innebär att bör se resultaten kritiskt. Mer forskning inom området behövs.
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Kapacitní problém listonoše / Capacitated Arc Routing ProblemFranc, Zdeněk January 2014 (has links)
The Capacitated Arc Routing Problem has many applications in real life. The aim of this problem is to minimize the total cost at fulfilment of the requirements of arcs. The Capacitated Arc Routing Problem is an extension of the Chinese Postman Problem, which is a special type of the Vehicle Routing Problems. In this thesis is explained the issue of the Chinese Postman Problem and its extensions at first. Subsequently the applications of mathematical models are illustrated on a model example. However these mathematical models, which are searching the optimal solution, do not use so much in reality. Therefore the randomized heuristic algorithm for solving these problems is suggested and programmed in this thesis. Subsequently this heuristic was applied to case study of garbage collection in Podebrady city.
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Comment améliorer la qualité de la césarienne dans les pays d'Afrique sub-saharienne ? / How to improve quality of cesarean section in sub-saharan Africa countries?Zongo, Koudnoaga Augustin 17 June 2015 (has links)
Les taux de césarienne sont en constante croissance dans le monde. Ces dernières années, on assiste à une augmentation sans cesse des taux hospitaliers d’accouchement par césarienne dans les pays à faible ressource malgré les recommandations de l’Organisation mondiale de la santé de ne pas dépasser 10 à 15 %. En Afrique au sud du Sahara, en particulier au Sénégal et au Mali, des politiques de subvention de la césarienne ont été introduites à l’échelle nationale à partir de 2005. Ces mesures ont contribué à l’augmentation de l’utilisation des services de maternité et des taux de césarienne. Si l’accessibilité financière à la césarienne a été améliorée substantiellement, la qualité n’a pas toujours suivi. Or, une augmentation trop importante des taux de césarienne peut avoir des effets négatifs sur la santé maternelle et périnatale. Par exemple, l’augmentation des taux institutionnels de césarienne au dessus de 10% en Amérique latine était associée à une augmentation de la mortalité maternelle et périnatale hospitalière. Trois ans après la mise en œuvre des politiques d’exemption des césariennes, le Programme Gesta international (PGI) a été mis en œuvre pour améliorer la qualité des soins obstétricaux dans 23 hôpitaux de référence au Sénégal et au Mali. Ce programme se basait sur l’audit clinque et la formation médicale continue du personnel sur les pratiques optimales en matière de soins intrapartum. Un essai contrôlé randomisé en grappe (essai QUARITE) a été mise en œuvre en 2007-2011 pour tester l’effet du PGI sur la mortalité maternelle hospitalière au Sénégal et au Mali. Initialement prévu pour améliorer la qualité des soins intra-partum, je me suis posé la question de l’efficacité de ce programme sur la pratique et les résultats de la césarienne. Les résultats de notre étude montrent que le PGI a permis de réduire l’évolution des taux de césarienne institutionnels dans les hôpitaux du groupe d’intervention comparativement à l’évolution dans le groupe contrôle. Par ailleurs, nous avons trouvé que le PGI a été plus efficace, en terme de réduction de la mortalité maternelle, parmi les femmes césarisées que parmi celles qui ont accouché par voie vaginale. Nous avons donc recommandé que des programmes d’amélioration de la qualité des soins soient mis en œuvre pour accompagner les politiques de subvention en cours dans la plupart des pays en Afrique au sud du Sahara et limiter ainsi l’utilisation excessive des césariennes dans ces pays. / Cesarean rates are rising steadily worldwide. In recent years, there has been an increasing cesarean rates in low-resource countries despite the World Health Organization recommended to not exceed 10-15%. In Senegal and Mali free cesarean policies were implemented nationally since 2005 and have contributed to increase the access to cesarean section. Access to cesarean deliveries has been improved substantially but quality of care has not always followed. However, excessive increase in cesarean section rates can have negative impacts on maternal and perinatal health. In Latin America, Asia, and Africa, several studies have shown an intrinsic risk of maternal and neonatal mortality associated with cesareans regardless of the initial health status of the mother or fetus. For example, the increase in hospital-based cesarean rates above 10% in Latin America was associated with an increase risk of maternal and perinatal mortality.Three years after the implementation of cesarean sections free policies, The Advances in Labour and Risk Management (ALARM) international program was implemented to improve the quality of obstetric care in 23 referral hospitals in Senegal and Mali. This program was based on maternal death review and staff training on best practices for intrapartum care. A randomized controlled cluster trial (QUARITE trial) was implemented in 2007-2011 to assess the effectiveness of the ALARM international program on in-hospital maternal mortality in Senegal and Mali. Initially planned to improve quality of Emergency Obstetric and Neonatal Care (EmONC), we assumed that this program was also effective on the quality of cesarean delivery.Results showed that the ALARM international program slowed down the trends of hospital-based cesarean rates in the 23 participating centers of the intervention group compared to the changes observed in the control group. Furthermore, we found that the program was more effective on maternal mortality among women who delivered by cesarean section than among women who delivered vaginally. We recommend that quality improvement strategies should support free cesarean policies to limit the excessive use of cesarean delivery.
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