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1.
Sex Transm Infect ; 99(5): 337-344, 2023 08.
Artículo en Inglés | MEDLINE | ID: mdl-36517220

RESUMEN

OBJECTIVES: Gay, bisexual and other men who have sex with men (gbMSM) have a higher risk of acquiring hepatitis A and B viruses (HAV and HBV) than the general population and are recommended for vaccination against both in Ireland. This study aims to determine the prevalence of self-reported HAV and HBV infection and vaccination among gbMSM in Ireland and explore factors associated with self-reported HAV and HBV vaccination among gbMSM. METHODS: This study analysed Irish data from the European MSM Internet Survey 2017 (EMIS-2017) to measure the prevalence of self-reported HAV and HBV infection and vaccination among gbMSM in Ireland. Multivariable logistic regression was used to explore the associations between sociodemographic, healthcare-related and behavioural factors and self-reported vaccination. RESULTS: There were 2083 EMIS-2017 respondents in Ireland. Among HIV-negative gbMSM, 4.6% and 4.4% reported previous HAV and HBV infection, respectively, and 51% and 57% reported the receipt of one or more vaccine dose for HAV and HBV, respectively. In the multivariable analysis, HIV-negative gbMSM had lower odds of self-reported HAV vaccination if they lived outside the capital, Dublin (aOR 0.61, 95% CI: 0.48 to 0.78), had no third-level education (aOR 0.65, 95% CI: 0.45 to 0.92), were not tested for HIV in the last year (aOR 0.39, 95% CI: 0.31 to 0.50), had never tried to obtain pre-exposure prophylaxis (PrEP, aOR 0.60, 95% CI: 0.38 to 0.96) and had not been diagnosed with a sexually transmitted infection (STI) in the previous year (aOR 0.42, 95% CI: 0.28 to 0.63). Similar associations were observed for self-reported HBV vaccination. CONCLUSIONS: Self-reported vaccination against HAV and HBV among gbMSM in Ireland is high, but the level of vaccination remains insufficient to protect against future HAV and HBV infections and outbreaks. Efforts to increase vaccination coverage among gbMSM should focus on men who live outside the capital, have lower educational attainment and do not engage with sexual health services.


Asunto(s)
Infecciones por VIH , Virus de la Hepatitis A , Hepatitis A , Minorías Sexuales y de Género , Masculino , Humanos , Homosexualidad Masculina , Hepatitis A/epidemiología , Hepatitis A/prevención & control , Irlanda/epidemiología , Encuestas y Cuestionarios , Vacunación , Infecciones por VIH/epidemiología
2.
Clin Trials ; 18(2): 245-259, 2021 04.
Artículo en Inglés | MEDLINE | ID: mdl-33611927

RESUMEN

BACKGROUND/AIMS: It is increasingly recognised that reliance on frequent site visits for monitoring clinical trials is inefficient. Regulators and trialists have recently encouraged more risk-based monitoring. Risk assessment should take place before a trial begins to define the overarching monitoring strategy. It can also be done on an ongoing basis, to target sites for monitoring activity. Various methods have been proposed for such prioritisation, often using terms like 'central statistical monitoring', 'triggered monitoring' or, as in the International Conference on Harmonization Good Clinical Practice guidance, 'targeted on-site monitoring'. We conducted a scoping review to identify such methods, to establish if any were supported by adequate evidence to allow wider implementation, and to guide future developments in this field of research. METHODS: We used seven publication databases, two sets of methodological conference abstracts and an Internet search engine to identify methods for using centrally held trial data to assess site conduct during a trial. We included only reports in English, and excluded reports published before 1996 or not directly relevant to our research question. We used reference and citation searches to find additional relevant reports. We extracted data using a predefined template. We contacted authors to request additional information about included reports. RESULTS: We included 30 reports in our final dataset, of which 21 were peer-reviewed publications. In all, 20 reports described central statistical monitoring methods (of which 7 focussed on detection of fraud or misconduct) and 9 described triggered monitoring methods; 21 reports included some assessment of their methods' effectiveness, typically exploring the methods' characteristics using real trial data without known integrity issues. Of the 21 with some effectiveness assessment, most contained limited information about whether or not concerns identified through central monitoring constituted meaningful problems. Several reports demonstrated good classification ability based on more than one classification statistic, but never without caveats of unclear reporting or other classification statistics being low or unavailable. Some reports commented on cost savings from reduced on-site monitoring, but none gave detailed costings for the development and maintenance of central monitoring methods themselves. CONCLUSION: Our review identified various proposed methods, some of which could be combined within the same trial. The apparent emphasis on fraud detection may not be proportionate in all trial settings. Despite some promising evidence and some self-justifying benefits for data cleaning activity, many proposed methods have limitations that may currently prevent their routine use for targeting trial monitoring activity. The implementation costs, or uncertainty about these, may also be a barrier. We make recommendations for how the evidence-base supporting these methods could be improved.


Asunto(s)
Ensayos Clínicos como Asunto , Medición de Riesgo , Costos y Análisis de Costo , Humanos
3.
Clin Trials ; 18(1): 115-126, 2021 02.
Artículo en Inglés | MEDLINE | ID: mdl-33231127

RESUMEN

BACKGROUND/AIMS: Clinical trials should be designed and managed to minimise important errors with potential to compromise patient safety or data integrity, employ monitoring practices that detect and correct important errors quickly, and take robust action to prevent repetition. Regulators highlight the use of risk-based monitoring, making greater use of centralised monitoring and reducing reliance on centre visits. The TEMPER study was a prospective evaluation of triggered monitoring (a risk-based monitoring method), whereby centres are prioritised for visits based on central monitoring results. Conducted in three UK-based randomised cancer treatment trials of investigational medicine products with time-to-event outcomes, it found high levels of serious findings at triggered centre visits but also at visits to matched control centres that, based on central monitoring, were not of concern. Here, we report a detailed review of the serious findings from TEMPER centre visits. We sought to identify feasible, centralised processes which might detect or prevent these findings without a centre visit. METHODS: The primary outcome of this study was the proportion of all 'major' and 'critical' TEMPER centre visit findings theoretically detectable or preventable through a feasible, centralised process. To devise processes, we considered a representative example of each finding type through an internal consensus exercise. This involved (a) agreeing the potential, by some described process, for each finding type to be centrally detected or prevented and (b) agreeing a proposed feasibility score for each proposed process. To further assess feasibility, we ran a consultation exercise, whereby the proposed processes were reviewed and rated for feasibility by invited external trialists. RESULTS: In TEMPER, 312 major or critical findings were identified at 94 visits. These findings comprised 120 distinct issues, for which we proposed 56 different centralised processes. Following independent review of the feasibility of the proposed processes by 87 consultation respondents across eight different trial stakeholder groups, we conclude that 306/312 (98%) findings could theoretically be prevented or identified centrally. Of the processes deemed feasible, those relating to informed consent could have the most impact. Of processes not currently deemed feasible, those involving use of electronic health records are among those with the largest potential benefit. CONCLUSIONS: This work presents a best-case scenario, where a large majority of monitoring findings were deemed theoretically preventable or detectable by central processes. Caveats include the cost of applying all necessary methods, and the resource implications of enhanced central monitoring for both centre and trials unit staff. Our results will inform future monitoring plans and emphasise the importance of continued critical review of monitoring processes and outcomes to ensure they remain appropriate.


Asunto(s)
Ensayos Clínicos Controlados Aleatorios como Asunto , Proyectos de Investigación , Antineoplásicos/efectos adversos , Drogas en Investigación/efectos adversos , Humanos , Consentimiento Informado , Neoplasias/tratamiento farmacológico
4.
N Engl J Med ; 376(26): 2534-2544, 2017 06 29.
Artículo en Inglés | MEDLINE | ID: mdl-28402245

RESUMEN

BACKGROUND: The use of levothyroxine to treat subclinical hypothyroidism is controversial. We aimed to determine whether levothyroxine provided clinical benefits in older persons with this condition. METHODS: We conducted a double-blind, randomized, placebo-controlled, parallel-group trial involving 737 adults who were at least 65 years of age and who had persisting subclinical hypothyroidism (thyrotropin level, 4.60 to 19.99 mIU per liter; free thyroxine level within the reference range). A total of 368 patients were assigned to receive levothyroxine (at a starting dose of 50 µg daily, or 25 µg if the body weight was <50 kg or the patient had coronary heart disease), with dose adjustment according to the thyrotropin level; 369 patients were assigned to receive placebo with mock dose adjustment. The two primary outcomes were the change in the Hypothyroid Symptoms score and Tiredness score on a thyroid-related quality-of-life questionnaire at 1 year (range of each scale is 0 to 100, with higher scores indicating more symptoms or tiredness, respectively; minimum clinically important difference, 9 points). RESULTS: The mean age of the patients was 74.4 years, and 396 patients (53.7%) were women. The mean (±SD) thyrotropin level was 6.40±2.01 mIU per liter at baseline; at 1 year, this level had decreased to 5.48 mIU per liter in the placebo group, as compared with 3.63 mIU per liter in the levothyroxine group (P<0.001), at a median dose of 50 µg. We found no differences in the mean change at 1 year in the Hypothyroid Symptoms score (0.2±15.3 in the placebo group and 0.2±14.4 in the levothyroxine group; between-group difference, 0.0; 95% confidence interval [CI], -2.0 to 2.1) or the Tiredness score (3.2±17.7 and 3.8±18.4, respectively; between-group difference, 0.4; 95% CI, -2.1 to 2.9). No beneficial effects of levothyroxine were seen on secondary-outcome measures. There was no significant excess of serious adverse events prespecified as being of special interest. CONCLUSIONS: Levothyroxine provided no apparent benefits in older persons with subclinical hypothyroidism. (Funded by European Union FP7 and others; TRUST ClinicalTrials.gov number, NCT01660126 .).


Asunto(s)
Hipotiroidismo/tratamiento farmacológico , Tiroxina/administración & dosificación , Anciano , Anciano de 80 o más Años , Método Doble Ciego , Fatiga/etiología , Femenino , Humanos , Hipotiroidismo/complicaciones , Análisis de Intención de Tratar , Masculino , Calidad de Vida , Tirotropina/sangre , Tiroxina/efectos adversos , Tiroxina/sangre , Insuficiencia del Tratamiento
5.
BMC Endocr Disord ; 17(1): 6, 2017 Feb 03.
Artículo en Inglés | MEDLINE | ID: mdl-28158982

RESUMEN

BACKGROUND: Subclinical hypothyroidism (SCH) is a common condition in elderly people, defined as elevated serum thyroid-stimulating hormone (TSH) with normal circulating free thyroxine (fT4). Evidence is lacking about the effect of thyroid hormone treatment. We describe the protocol of a large randomised controlled trial (RCT) of Levothyroxine treatment for SCH. METHODS: Participants are community-dwelling subjects aged ≥65 years with SCH, diagnosed by elevated TSH levels (≥4.6 and ≤19.9 mU/L) on a minimum of two measures ≥ three months apart, with fT4 levels within laboratory reference range. The study is a randomised double-blind placebo-controlled parallel group trial, starting with levothyroxine 50 micrograms daily (25 micrograms in subjects <50Kg body weight or known coronary heart disease) with titration of dose in the active treatment group according to TSH level, and a mock titration in the placebo group. The primary outcomes are changes in two domains (hypothyroid symptoms and fatigue / vitality) on the thyroid-related quality of life questionnaire (ThyPRO) at one year. The study has 80% power (at p = 0.025, 2-tailed) to detect a change with levothyroxine treatment of 3.0% on the hypothyroid scale and 4.1% on the fatigue / vitality scale with a total target sample size of 750 patients. Secondary outcomes include general health-related quality of life (EuroQol), fatal and non-fatal cardiovascular events, handgrip strength, executive cognitive function (Letter Digit Coding Test), basic and instrumental activities of daily living, haemoglobin, blood pressure, weight, body mass index and waist circumference. Patients are monitored for specific adverse events of interest including incident atrial fibrillation, heart failure and bone fracture. DISCUSSION: This large multicentre RCT of levothyroxine treatment of subclinical hypothyroidism is powered to detect clinically relevant change in symptoms / quality of life and is likely to be highly influential in guiding treatment of this common condition. TRIAL REGISTRATION: Clinicaltrials.gov NCT01660126 ; registered 8th June 2012.


Asunto(s)
Terapia de Reemplazo de Hormonas , Hipotiroidismo/tratamiento farmacológico , Tiroxina/administración & dosificación , Anciano , Bancos de Sangre , Protocolos Clínicos , Método Doble Ciego , Humanos , Seguridad del Paciente
6.
Euro Surveill ; 22(48)2017 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-29208157

RESUMEN

In Ireland, men who have sex with men (MSM) have increased HIV risk. Pre-exposure prophylaxis (PrEP), combined with safe sex practices, can reduce HIV acquisition. We estimated MSM numbers likely to present for PrEP by applying French PrEP criteria to Irish MSM behavioural survey data. We adjusted for survey bias, calculated proportions accessing testing services and those likely to take PrEP. We estimated 1-3% of MSM in Ireland were likely to present for PrEP.


Asunto(s)
Fármacos Anti-VIH/administración & dosificación , Infecciones por VIH/prevención & control , Homosexualidad Masculina/estadística & datos numéricos , Aceptación de la Atención de Salud/estadística & datos numéricos , Profilaxis Pre-Exposición , Adolescente , Adulto , Fármacos Anti-VIH/uso terapéutico , Conocimientos, Actitudes y Práctica en Salud , Humanos , Irlanda/epidemiología , Masculino , Persona de Mediana Edad , Conducta Sexual/estadística & datos numéricos , Encuestas y Cuestionarios , Adulto Joven
7.
Euro Surveill ; 20(40)2015.
Artículo en Inglés | MEDLINE | ID: mdl-26537764

RESUMEN

In February 2015, an outbreak of recently acquired HIV infections among people who inject drugs (PWID) was identified in Dublin, following similar outbreaks in Greece and Romania in 2011. We compared drug and risk behaviours among 15 HIV cases and 39 controls. Injecting a synthetic cathinone, snow blow, was associated with recent HIV infection (AOR: 49; p=0.003). Prevention and control efforts are underway among PWID in Dublin, but may also be needed elsewhere in Europe.


Asunto(s)
Consumidores de Drogas/estadística & datos numéricos , Infecciones por VIH/diagnóstico , Personas con Mala Vivienda , Psicotrópicos/administración & dosificación , Pirrolidinas/administración & dosificación , Abuso de Sustancias por Vía Intravenosa/complicaciones , Adulto , Estudios de Casos y Controles , Cromatografía Líquida de Alta Presión , Drogas de Diseño/administración & dosificación , Drogas de Diseño/análisis , Brotes de Enfermedades , Femenino , Infecciones por VIH/epidemiología , Infecciones por VIH/transmisión , Humanos , Incidencia , Irlanda/epidemiología , Masculino , Espectrometría de Masas , Persona de Mediana Edad , Psicotrópicos/orina , Pirrolidinas/orina , Factores de Riesgo , Asunción de Riesgos , Abuso de Sustancias por Vía Intravenosa/epidemiología
8.
Health Inf Manag ; 51(1): 50-56, 2022 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-32586137

RESUMEN

Safe and reliable healthcare depends on access to health information that is accurate, valid, reliable, timely, relevant, legible and complete. National data collections are repositories of health and social care data and play a crucial role in healthcare planning and clinical decision-making. We describe the development of an evidence-informed multi-method quality improvement program aimed to improve the quality of health and social care data in Ireland. Specific components involved: development of guidance to support implementation of health information standards; review program to assess compliance with standards; and educating health information stakeholders about health data and information quality. Observations from implementation of the program indicate enhanced health information stakeholder awareness of, and increased adoption of information management standards. The methodology used in the review program has proved to be a robust approach to identify areas of good practice and opportunities for improvement in information management practices. There has been positive adoption of the program among organisations reviewed and acceptance of the proposed recommendations. Early indications are that this multi-method approach will drive improvements in information management practices, leading to an improvement in health and social care data quality in Ireland. Aspects of this approach may be adapted to meet the needs of other countries.


Asunto(s)
Atención a la Salud , Mejoramiento de la Calidad , Irlanda , Apoyo Social
9.
Ir J Med Sci ; 189(4): 1507-1514, 2020 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-32240479

RESUMEN

BACKGROUND: HIV continues to be an important public health issue. Voluntary community-based HIV testing (VCBT) helps to reduce the undiagnosed population of HIV-positive individuals, enabling early diagnosis and treatment. Monitoring is essential to determine whether at-risk groups are being effectively reached. AIMS: Our aim was to pilot and then introduce sustained monitoring of VCBT in Ireland, through collaboration between statutory and non-statutory organisations. METHODS: The study was initiated by the Health Protection Surveillance Centre in 2018. Steps included forming a multisectoral steering group and developing a minimum standardised dataset. De-identified case-based data were requested for VCBT carried out from 1 January 2017 onwards; this paper includes data for 2018. RESULTS: Six organisations participated; all four NGOs involved in VCBT, one medical charity, and the Health Service Executive National Social Inclusion Office. Methods were rapid point-of-care testing (POCT) (54%) or laboratory based (46%). Total HIV test reactivity was 1.7% (1.5% excluding persons later identified as previously diagnosed HIV positive). All POCT data were case based; the test reactivity rate was 0.8% and was higher in bar/club settings (1.2%). Most (74%) laboratory testing data were in aggregate format; the test positivity rate in one asylum centre was 5.0%. Ongoing challenges include testing among persons later identified as previously diagnosed HIV positive, monitoring case-based testing in asylum settings, and suboptimal data on confirmatory testing and linkage to care. CONCLUSIONS: Sustained national monitoring in community settings will help inform HIV testing guidelines and will enable assessment of the impact of local and regional community HIV testing strategies.


Asunto(s)
Infecciones por VIH/epidemiología , Vigilancia de la Población/métodos , Adulto , Femenino , Historia del Siglo XXI , Humanos , Irlanda , Masculino , Tamizaje Masivo , Proyectos Piloto
10.
HRB Open Res ; 1: 14, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-32002507

RESUMEN

Background: While there is an increasing consensus that clinical trial results should be shared with trial participants, there is a lack of evidence on the most appropriate methods. The aim of this study is to use a patient and public involvement (PPI) approach to identify, develop and evaluate a patient-preferred method of receiving results of the Thyroid Hormone Replacement for Subclinical Hypo-Thyroidism Trial (TRUST). Methods: This is a mixed methods study with three consecutive phases. Phase 1 iteratively developed a patient-preferred result method using semi-structured focus groups and a consensus-orientated-decision model, a PPI group to refine the method and adult literacy review for plain English assessment. Phase 2 was a single-blind parallel group trial. Irish TRUST participants were randomised to the intervention (patient-preferred method) and control group (standard method developed by lead study site). Phase 3 used a patient understanding questionnaire to compare patient understanding of results between the two methods. Results: Patients want to receive results of clinical trials, with qualitative findings indicating three key themes including 'acknowledgement of individual contribution', 'contributing for a collective benefit' and 'receiving accessible and easy to understand results'. Building on these findings, a patient-preferred method of receiving results was developed as described above. TRUST participants (n=101) were randomised to the intervention. The questionnaire response rate was 74% for the intervention group and 62% for the control group.  There were no differences in patient understanding between the two methods.  Conclusions: We have demonstrated that it is feasible to conduct PPI with regard to the dissemination of results. The study identified and developed a patient-preferred method of receiving clinical trial results for older adults over 65 years. Although, in this study PPI did not influence patients' final understanding of results, it provides a record of the process of conducting PPI within the clinical trial setting.

11.
Trials ; 18(1): 423, 2017 09 11.
Artículo en Inglés | MEDLINE | ID: mdl-28893317

RESUMEN

BACKGROUND: In November 2016, the ICH published a requirement for sponsors to develop a systematic, prioritised, risk-based approach to monitoring clinical trials. This approach is more commonly known as risk-based monitoring (RBM). However, recent evidence suggests that a 'gold standard', validated approach to RBM does not exist and it is unclear how sponsors will introduce RBM into their organisations. A first step needed to inform the implementation of RBM is to explore academic trialists' readiness and ability to perform RBM. The aim of this paper is to identify the attitudes and perceived barriers and facilitators to the implementation of RBM in academic-led clinical trials in Ireland. METHODS: This is a mixed-methods, explanatory sequential design, with quantitative survey followed by semistructured interviews. Academic clinical researchers (N = 132) working in Ireland were surveyed to examine their use and perceptions of RBM. A purposive sample of survey participants (n = 22) were then interviewed to gain greater insight into the quantitative findings. The survey and interview data were merged to generate a list of perceived barriers and facilitators to RBM implementation, with suggestions for, and solutions to, these issues. RESULTS: Survey response rate was 49% (132/273). Thirteen percent (n = 18) of responders were not familiar with the term risk-based monitoring and less than a quarter of respondents (21%, n = 28) had performed RBM in a clinical trial. Barriers to RBM implementation included lack of RBM knowledge/training, increased costs caused by greater IT demands, increased workload for trial staff and lack of evidence to support RBM as an effective monitoring approach. Facilitators included participants' legal obligation to perform RBM under the new ICH-GCP guidelines, availability of RBM guidance and perception of cost savings by performing RBM in future trials. CONCLUSION: The results of this study demonstrate a need for training and regulatory-endorsed guidelines to support the implementation of RBM in academic-led clinical trials. The study provides valuable insights to inform interventions and strategies by policy-makers and clinical trial regulators to improve RBM uptake.


Asunto(s)
Actitud del Personal de Salud , Ensayos Clínicos como Asunto/métodos , Conocimientos, Actitudes y Práctica en Salud , Percepción , Proyectos de Investigación , Investigadores/psicología , Ensayos Clínicos como Asunto/economía , Ensayos Clínicos como Asunto/normas , Ahorro de Costo , Humanos , Entrevistas como Asunto , Seguridad del Paciente , Guías de Práctica Clínica como Asunto , Proyectos de Investigación/normas , Investigadores/economía , Investigadores/normas , Apoyo a la Investigación como Asunto , Medición de Riesgo , Encuestas y Cuestionarios , Terminología como Asunto
12.
Contemp Clin Trials Commun ; 7: 163-165, 2017 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-29696180

RESUMEN

INTRODUCTION: Dissemination of results of randomised controlled trials is traditionally limited to academic and professional groups rather than clinical trial participants. While there is increasing consensus that results should be communicated to trial participants, there is a lack of evidence on the most appropriate methods of dissemination. This study within a trial (SWAT) aims to address this gap by using a public and patient involvement (PPI) approach to identify, develop and evaluate a patient-preferred method of receiving trial results of the Thyroid Hormone Replacement for Subclinical Hypothyroidism Trial (TRUST). METHODS: An experimental (intervention) study will be conducted using mixed methods to inform the development of and evaluation of a patient-preferred method of communication of trial results. The study will involve three consecutive phases. In the first phase, focus groups of trial participants will be conducted to identify a patient-preferred method of receiving trial results. The method will be developed and then assessed and refined by a patient and public expert group. In the second phase participants will be randomly assigned to the intervention (patient-preferred method) and comparison groups (standard dissemination method as developed by the lead study site in Glasgow, Scotland). In the third phase, a quantitative questionnaire will be used to measure and compare patient understanding of trial results between the two groups. DISCUSSION: This protocol provides a template for other trialists who wish to enhance patient and public involvement and additionally, will provide empirical evidence on how trialists should best disseminate study results to their participants.

13.
Nurs Stand ; 20(24): 26-7, 2006.
Artículo en Inglés | MEDLINE | ID: mdl-16526158

RESUMEN

Sudan has huge health and development needs, and nurses are volunteering to help. The 22-year war has created millions of internally displaced people, many living in camps. Local people are being trained to manage healthcare needs. HIV/AIDS is expected to increase as refugees return home. Permanent and mobile clinics have been established.


Asunto(s)
Agencias Internacionales/organización & administración , Intercambio Educacional Internacional , Personal de Enfermería/psicología , Atención Primaria de Salud/organización & administración , Voluntarios/psicología , Actitud del Personal de Salud , Infecciones por VIH/epidemiología , Infecciones por VIH/prevención & control , Necesidades y Demandas de Servicios de Salud , Humanos , Irlanda , Unidades Móviles de Salud/organización & administración , Personal de Enfermería/educación , Refugiados , Sudán/epidemiología , Guerra
14.
Contemp Clin Trials ; 51: 15-27, 2016 11.
Artículo en Inglés | MEDLINE | ID: mdl-27641969

RESUMEN

INTRODUCTION: In November 2016, the Integrated Addendum to ICH-GCP E6 (R2) will advise trial sponsors to develop a risk-based approach to clinical trial monitoring. This new process is commonly known as risk based monitoring (RBM). To date, a variety of tools have been developed to guide RBM. However, a gold standard approach does not exist. This review aims to identify and examine RBM tools. METHODS: Review of published and grey literature using a detailed search-strategy and cross-checking of reference lists. This review included academic and commercial instruments that met the Organisation for Economic Co-operation and Development (OECD) classification of RBM tools. RESULTS: Ninety-one potential RBM tools were identified and 24 were eligible for inclusion. These tools were published between 2000 and 2015. Eight tools were paper based or electronic questionnaires and 16 operated as Service as a System (SaaS). Risk associated with the investigational medicinal product (IMP), phase of the clinical trial and study population were examined by all tools and suitable mitigation guidance through on-site and centralised monitoring was provided. CONCLUSION: RBM tools for clinical trials are relatively new, their features and use varies widely and they continue to evolve. This makes it difficult to identify the "best" RBM technique or tool. For example, equivalence testing is required to determine if RBM strategies directed by paper based and SaaS based RBM tools are comparable. Such research could be embedded within multi-centre clinical trials and conducted as a SWAT (Study within a Trial).


Asunto(s)
Comités de Monitoreo de Datos de Ensayos Clínicos , Ensayos Clínicos como Asunto , Riesgo , Humanos
15.
Infect Control Hosp Epidemiol ; 37(6): 680-4, 2016 06.
Artículo en Inglés | MEDLINE | ID: mdl-27074865

RESUMEN

OBJECTIVE To use next-generation sequencing (NGS) analysis to enhance epidemiological information to identify and resolve a Clostridium difficile outbreak and to evaluate its effectiveness beyond the capacity of current standard PCR ribotyping. METHODS NGS analysis was performed as part of prospective surveillance of all detected C. difficile isolates at a university hospital. An outbreak of a novel C. difficile sequence type (ST)-295 was identified in a hospital and a community hostel for homeless adults. Phylogenetic analysis was performed of all ST-295 and closest ST-2 isolates. Epidemiological details were obtained from hospital records and the public health review of the community hostel. RESULTS We identified 7 patients with C. difficile ST-295 infections between June 2013 and April 2015. Of these patients, 3 had nosocomial exposure to this infection and 3 had possible hostel exposure. Current Society for Healthcare Epidemiology of America (SHEA)- Infectious Diseases Society of America (IDSA) surveillance definitions (2010) were considered in light of our NGS findings. The initial transmission was not detectable using current criteria, because of 16 weeks between ST-295 exposure and symptoms. We included 3 patients with hostel exposure who met surveillance criteria of hospital-acquired infection due to their hospital admissions. CONCLUSION NGS analysis enhanced epidemiological information and helped identify and resolve an outbreak beyond the capacity of standard PCR ribotyping. In this cluster of cases, NGS was used to identify a hostel as the likely source of community-based C. difficile transmission. Infect Control Hosp Epidemiol 2016;37:680-684.


Asunto(s)
Clostridioides difficile/patogenicidad , Infecciones Comunitarias Adquiridas/transmisión , Infección Hospitalaria/transmisión , Enterocolitis Seudomembranosa/transmisión , Secuenciación de Nucleótidos de Alto Rendimiento/métodos , Anciano , Anciano de 80 o más Años , Clostridioides difficile/genética , Infecciones Comunitarias Adquiridas/microbiología , Infección Hospitalaria/microbiología , Brotes de Enfermedades , Enterocolitis Seudomembranosa/microbiología , Femenino , Humanos , Masculino , Persona de Mediana Edad , Filogenia , Estados Unidos/epidemiología
16.
Nucl Med Commun ; 35(10): 1032-7, 2014 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-25014243

RESUMEN

OBJECTIVE: Rubidium-82 (Rb-82) PET myocardial perfusion imaging (MPI) has superior diagnostic accuracy, at least similar prognostic value, and lower patient radiation exposure when compared with technetium-99m single-photon emission computed tomography (Tc-99m SPECT) MPI. The aim of this study was to compare occupational radiation exposure from the two modalities and show that improvements for the patient do not come at a cost to staff. MATERIALS AND METHODS: Electronic personal dosimeters were worn by staff involved in the administration and imaging of routine clinical Tc-99m SPECT and Rb-82 PET MPI, and during tracer production and QC. To estimate dose to the staff in the event of a medical emergency, a survey meter was placed in close contact with the patient during Rb-82 infusion and imaging, and immediately after administration for Tc-99m SPECT. RESULTS: Mean (SD) whole-body effective dose to staff during a single MPI procedure was 0.4 (0.4) µSv for Rb-82 PET (1110 MBq) and 3.3 (1.7) µSv for Tc-99m SPECT (350 MBq). Staff effective dose during tracer production and QC was low (<0.2 µSv/patient) and comparable between tracers. An additional effective dose was measured at close contact to the patient during, and immediately after, tracer administration, although this will not pose a significant radiation risk to staff with either technique as long as this is not routine practice. CONCLUSION: There is a significant reduction in effective dose during Rb-82 PET when compared with Tc-99m SPECT MPI because of the short half-life of Rb-82 and reduced patient contact.


Asunto(s)
Imagen de Perfusión Miocárdica , Exposición Profesional/estadística & datos numéricos , Monitoreo de Radiación , Radiofármacos/efectos adversos , Radioisótopos de Rubidio/efectos adversos , Tecnecio/efectos adversos , Tomografía Computarizada de Emisión de Fotón Único , Personal de Salud , Humanos , Imagen por Resonancia Magnética , Radiometría , Radiofármacos/análisis , Radioisótopos de Rubidio/análisis , Tecnecio/análisis
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