51 research outputs found
Development of quality metrics for ambulatory pediatric cardiology: Transposition of the great arteries after arterial switch operation
ObjectiveTo develop quality metrics (QMs) for the ambulatory care of patients with transposition of the great arteries following arterial switch operation (TGA/ASO).DesignUnder the auspices of the American College of Cardiology Adult Congenital and Pediatric Cardiology (ACPC) Steering committee, the TGA/ASO team generated candidate QMs related to TGA/ASO ambulatory care. Candidate QMs were submitted to the ACPC Steering Committee and were reviewed for validity and feasibility using individual expert panel member scoring according to the RANDâ UCLA methodology. QMs were then made available for review by the entire ACC ACPC during an â open comment period.â Final approval of each QM was provided by a vote of the ACC ACPC Council.PatientsPatients with TGA who had undergone an ASO were included. Patients with complex transposition were excluded.ResultsTwelve candidate QMs were generated. Seven metrics passed the RANDâ UCLA process. Four passed the â open comment periodâ and were ultimately approved by the Council. These included: (1) at least 1 echocardiogram performed during the first year of life reporting on the function, aortic dimension, degree of neoaortic valve insufficiency, the patency of the systemic and pulmonary outflows, the patency of the branch pulmonary arteries and coronary arteries, (2) neurodevelopmental (ND) assessment after ASO; (3) lipid profile by age 11 years; and (4) documentation of a transition of care plan to an adult congenital heart disease (CHD) provider by 18 years of age.ConclusionsApplication of the RANDâ UCLA methodology and linkage of this methodology to the ACPC approval process led to successful generation of 4 QMs relevant to the care of TGA/ASO pediatric patients in the ambulatory setting. These metrics have now been incorporated into the ACPC Quality Network providing guidance for the care of TGA/ASO patients across 30 CHD centers.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/142334/1/chd12540_am.pdfhttps://deepblue.lib.umich.edu/bitstream/2027.42/142334/2/chd12540.pd
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Combining Independent, Weighted P-Values: Achieving Computational Stability by a Systematic Expansion with Controllable Accuracy
Given the expanding availability of scientific data and tools to analyze them, combining different assessments of the same piece of information has become increasingly important for social, biological, and even physical sciences. This task demands, to begin with, a method-independent standard, such as the -value, that can be used to assess the reliability of a piece of information. Good's formula and Fisher's method combine independent -values with respectively unequal and equal weights. Both approaches may be regarded as limiting instances of a general case of combining -values from groups; -values within each group are weighted equally, while weight varies by group. When some of the weights become nearly degenerate, as cautioned by Good, numeric instability occurs in computation of the combined -values. We deal explicitly with this difficulty by deriving a controlled expansion, in powers of differences in inverse weights, that provides both accurate statistics and stable numerics. We illustrate the utility of this systematic approach with a few examples. In addition, we also provide here an alternative derivation for the probability distribution function of the general case and show how the analytic formula obtained reduces to both Good's and Fisher's methods as special cases. A C++ program, which computes the combined -values with equal numerical stability regardless of whether weights are (nearly) degenerate or not, is available for download at our group website http://www.ncbi.nlm.nih.gov/CBBresearch/Yu/downloads/CoinedPValues.html
A review of 3D first-pass, whole-heart, myocardial perfusion cardiovascular magnetic resonance
Arachnids of medical importance in Brazil: main active compounds present in scorpion and spider venoms and tick saliva
Differences of Two Ordered Observations Divided by Standard Deviation in the Case of Negatively Exponential Distribution
Wirksamkeit einiger Schätzungen der Varianz einer Grundgesamtheit mit einem alternativen Merkmal.
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