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Influenza Vaccine. Vaccine efficacy or vaccine effectiveness is the percentage reduction of disease cases in a vaccinated group of people compared to an unvaccinated group.For example, a vaccine efficacy or effectiveness of 80% indicates an 80% decrease in the number of disease cases among a group of vaccinated people compared to a group in which nobody was vaccinated.
Different degrees of improvement are referred to as ACR20, ACR50, ACR70. ACR20 was initially proposed with ACR scoring, measuring a 20% improvement on a scale of 28 intervals. ACR50 and ACR70 were later proposed, corresponding to 50% and 70% improvements. [2] The Rheumatoid Arthritis Severity Scale (RASS) is based on sections of the ACR scoring ...
An infection rate or incident rate is the probability or risk of an infection in a population.It is used to measure the frequency of occurrence of new instances of infection within a population during a specific time period.
The Nottingham prognostic index (NPI) is used to determine prognosis following surgery for breast cancer. [1] [2] Its value is calculated using three pathological criteria: the size of the tumour; the number of involved lymph nodes; and the grade of the tumour. [1]
40% – 70% An industry in this range is likely an oligopoly. An oligopoly describes a market structure which is dominated by a small number of firms each with significant market shares. High concentration 70% – 100% This category ranges from an oligopoly to a monopoly.
This "Rule of 70" gives accurate doubling times to within 10% for growth rates less than 25% and within 20% for rates less than 60%. Larger growth rates result in the rule underestimating the doubling time by a larger margin. Some doubling times calculated with this formula are shown in this table. Simple doubling time formula:
General Motors is adding over 132,000 heavy-duty pickups in the U.S. to a previous recall for tailgate release switches that can short circuit and open the gates while the trucks are in park. The ...
The vitality model of former General Electric chairman and CEO Jack Welch has been described as a "20-70-10" system. The "top 20" percent of the workforce is most productive, and 70% (the "vital 70") work adequately. The other 10% ("bottom 10") are nonproducers and should be fired. [1] [2]