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MDCalc is a free online medical reference for healthcare professionals that provides point-of-care clinical decision-support tools, including medical calculators, scoring systems, and algorithms. [1] MDCalc is also a mobile and web app. [ 2 ] The decision-support tools are based on published clinical research, [ 3 ] and MDCalc’s content is ...
Medical calculators arose because modern medicine makes frequent use of scores and indices that put physicians' memory and calculation skills to the test. [2] The advent of personal computers, the Internet and Web, and more recently personal digital assistants (PDAs) have formed an environment conducive to their development, spread and use.
Further, PROMIS tools allow for computer adaptive testing, efficiently achieving precise measurement of health status domains with few items. There are PROMIS measures for both adults and children. PROMIS was established in 2004 with funding from the National Institutes of Health (NIH) as one of the initiatives of the NIH Roadmap for Medical ...
Classically, for clinical indications of an approved drug, TI refers to the ratio of the dose of the drug that causes adverse effects at an incidence/severity not compatible with the targeted indication (e.g. toxic dose in 50% of subjects, TD 50) to the dose that leads to the desired pharmacological effect (e.g. efficacious dose in 50% of ...
In clinical use, the CHADS 2 score has been superseded by the CHA 2 DS 2-VASc score, which gives a better stratification of low-risk patients. The CHADS 2 score has been outperformed by the CHA 2 DS 2 -VASc in multiple patient groups including patients with AF who are receiving outpatient elective electrical cardioversion.
Treatment is very effective but worse than control: 0.2: 0.1: −10: Ten receive the treatment, and ten receive a control. Eight improve with the treatment and two do not. In the control group, nine improve and one does not. Therefore, the treatment was less helpful than the control in one of ten cases. NNT is 1/(0.1 – 0.2), which is -10.
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The indicator DDDs per inhabitant per year can be used for drugs normally prescribed for short treatment duration (e.g., antibiotics) to indicate the average number of days in a year a person may take that treatment. The extent to which estimates using DDD reflect actual clinical practice depends on how close the DDD is to the typical ...