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작성일 2024-09-20

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Pragmatic Free Trial Meta

Pragmatic Free Trial Meta is a free and non-commercial open data platform and infrastructure that facilitates research on pragmatic trials. It collects and distributes cleaned trial data, ratings, and evaluations using PRECIS-2. This allows for diverse meta-epidemiological analyses to evaluate the effects of treatment across trials with different levels of pragmatism.

Background

Pragmatic studies provide real-world evidence that can be used to make clinical decisions. The term "pragmatic" however, is used inconsistently and its definition and measurement need further clarification. Pragmatic trials must be designed to inform clinical practice and policy decisions, rather than to prove an hypothesis that is based on a clinical or physiological basis. A pragmatic trial should aim to be as close as is possible to real-world clinical practices which include the recruiting participants, setting, designing, delivery and execution of interventions, determining and analysis outcomes, and primary analysis. This is a major difference between explanatory trials as described by Schwartz and Lellouch1, which are designed to test a hypothesis in a more thorough manner.

Trials that are truly practical should be careful not to blind patients or clinicians as this could lead to bias in estimates of the effect of treatment. Practical trials also involve patients from different health care settings to ensure that their results can be generalized to the real world.

Additionally the focus of pragmatic trials should be on outcomes that are important to patients, like quality of life or functional recovery. This is particularly important in trials that require invasive procedures or have potentially serious adverse consequences. The CRASH trial29, for example focused on the functional outcome to evaluate a two-page case report with an electronic system for monitoring of patients in hospitals suffering from chronic heart failure. In addition, the catheter trial28 used urinary tract infections caused by catheters as its primary outcome.

In addition to these characteristics pragmatic trials should also reduce trial procedures and data-collection requirements to cut costs and time commitments. Furthermore pragmatic trials should try to make their results as applicable to real-world clinical practice as they can by ensuring that their primary analysis is based on the intention-to-treat method (as described in CONSORT extensions for pragmatic trials).

Many RCTs that do not meet the criteria for pragmatism however, they have characteristics that are contrary to pragmatism, have been published in journals of various types and incorrectly labeled as pragmatic. This can lead to misleading claims of pragmatism, and the term's use should be made more uniform. The development of the PRECIS-2 tool, which offers an objective and standard assessment of practical features is a great first step.

Methods

In a practical trial, the aim is to inform policy or clinical decisions by showing how an intervention could be implemented into routine care. This differs from explanation trials, which test hypotheses about the causal-effect relationship in idealized conditions. In this way, pragmatic trials can have a lower internal validity than explanatory studies and are more susceptible to biases in their design as well as analysis and conduct. Despite their limitations, pragmatic research can provide valuable information to make decisions in the context of healthcare.

The PRECIS-2 tool evaluates an RCT on 9 domains, with scores ranging between 1 and 5 (very pragmatic). In this study, the areas of recruitment, organisation and flexibility in delivery, flexible adherence and follow-up received high scores. However, the principal outcome and method of missing data scored below the pragmatic limit. This indicates that a trial can be designed with effective pragmatic features, without damaging the quality.

However, it's difficult to determine how practical a particular trial really is because pragmaticity is not a definite attribute; some aspects of a study can be more pragmatic than others. Moreover, protocol or logistic changes during the trial may alter its pragmatism score. Additionally 36% of the 89 pragmatic trials identified by Koppenaal and colleagues were placebo-controlled, or conducted prior to approval and a majority of them were single-center. They aren't in line with the usual practice and are only referred to as pragmatic if the sponsors agree that these trials aren't blinded.

A common aspect of pragmatic studies is that researchers try to make their findings more meaningful by analyzing subgroups within the trial sample. This can lead to unbalanced comparisons and lower statistical power, increasing the likelihood of missing or misinterpreting differences in the primary outcome. In the case of the pragmatic trials included in this meta-analysis, this was a significant problem because the secondary outcomes were not adjusted to account for the differences in the baseline covariates.

Additionally, studies that are pragmatic may pose challenges to collection and interpretation of safety data. This is due to the fact that adverse events are typically reported by participants themselves and are susceptible to reporting errors, delays or coding errors. It is crucial to improve the accuracy and 슬롯 quality of the outcomes in these trials.

Results

Although the definition of pragmatism does not require that all clinical trials are 100% pragmatist There are advantages when incorporating pragmatic components into trials. These include:

Increased sensitivity to real-world issues, reducing study size and cost as well as allowing trial results to be faster implemented into clinical practice (by including patients who are routinely treated). However, pragmatic trials may also have drawbacks. For instance, the appropriate type of heterogeneity can help a study to generalize its findings to a variety of patients and settings; however, the wrong type of heterogeneity can reduce assay sensitiveness and consequently lessen the ability of a study to detect minor treatment effects.

Several studies have attempted to classify pragmatic trials using different definitions and scoring methods. Schwartz and Lellouch1 developed a framework for distinguishing between explanation-based trials that support a clinical or physiological hypothesis, and pragmatic trials that inform the choice of appropriate therapies in the real-world clinical setting. The framework was comprised of nine domains, each scoring on a scale of 1 to 5 with 1 indicating more lucid and 5 indicating more practical. The domains were recruitment and setting, delivery of intervention with flexibility, follow-up and primary analysis.

The original PRECIS tool3 was an adapted version of the PRECIS tool3 that was based on the same scale and domains. Koppenaal et al10 developed an adaptation of the assessment, dubbed the Pragmascope, that was easier to use for systematic reviews. They discovered that pragmatic reviews scored higher in most domains, but scored lower in the primary analysis domain.

The difference in the analysis domain that is primary could be explained by the fact that most pragmatic trials analyse their data in an intention to treat way, whereas some explanatory trials do not. The overall score for systematic reviews that were pragmatic was lower when the areas of organization, flexible delivery, 프라그마틱 홈페이지 and follow-up were merged.

It is important to remember that a study that is pragmatic does not mean that a trial is of poor quality. In fact, there are increasing numbers of clinical trials that employ the word 'pragmatic,' either in their abstract or title (as defined by MEDLINE, but that is neither sensitive nor precise). These terms may indicate a greater appreciation of pragmatism in abstracts and titles, 프라그마틱 정품인증 however it isn't clear whether this is evident in content.

Conclusions

In recent years, pragmatic trials are gaining popularity in research as the importance of real-world evidence is becoming increasingly acknowledged. They are randomized studies that compare real-world alternatives to experimental treatments in development. They include patient populations closer to those treated in regular medical care. This approach has the potential to overcome the limitations of observational research that are prone to limitations of relying on volunteers, and the limited availability and the variability of coding in national registry systems.

Pragmatic trials have other advantages, such as the ability to leverage existing data sources, and a greater chance of detecting significant differences than traditional trials. However, pragmatic tests may be prone to limitations that undermine their reliability and generalizability. Participation rates in some trials could be lower than expected because of the healthy-volunteering effect, financial incentives, or competition from other research studies. A lot of pragmatic trials are restricted by the need to enroll participants on time. In addition, some pragmatic trials do not have controls to ensure that the observed differences are not due to biases in trial conduct.

The authors of the Pragmatic Free Trial Meta identified 48 RCTs that self-described themselves as pragmatic and were published from 2022. The PRECIS-2 tool was employed to determine the degree of pragmatism. It covers domains such as eligibility criteria, recruitment flexibility and 프라그마틱 불법 adherence to intervention and follow-up. They discovered that 14 of the trials scored pragmatic or highly pragmatic (i.e. scores of 5 or higher) in any one or more of these domains, and that the majority of these were single-center.

Studies with high pragmatism scores are likely to have broader criteria for eligibility than traditional RCTs. They also contain populations from various hospitals. The authors argue that these characteristics can help make pragmatic trials more effective and useful for everyday clinical practice, however they don't necessarily mean that a pragmatic trial is free of bias. In addition, the pragmatism that is present in the trial is not a fixed attribute and a pragmatic trial that doesn't possess all the characteristics of an explanatory trial may yield valid and useful results.