Epidemly and biostat Assignment Example | Topics and Well Written Essays - 1250 words - 1

Epidemly and biostat - Assignment Example The objective is to evaluate one or more new treatments for a disease or condition. Intervention trial therefore involves choosing a sample from the diseased people to investigate there rare disease and undertake a follow up condition. Q2. What statistical method(s) a researcher can use to determine if the mean body mass index of the population is the same for three groups of subjects (group1=diet restriction; group2=exercise; group3=none). (EACH IS TWO POINTS =TOTAL=SIX POINTS) Q3. Ã… ¶ represents the predicted value of y calculated using the equation Ã… ¶ = a + bx. In the formula, SBP = 34 + 0.2 x; where x = value of postnatal age (hours) for the neonates ≠¤ 1,000 grams? What is the value of the intercept (a)? What is the value of the slope (b)? (TWO POINTS) Q5. An equation indicating that systolic blood pressure or SBP = 30 + 0.4x. If the value of x is postnatal age of 20 hours, what is the value for Ã… ¶ or SBP for neonates ≠¤ 1,000 grams? Show your calculations. (TWO POINTS) Population attributable fraction is a statistic used to estimate the proportional reduction in average disease risk over a given time interval that would be achieved by eliminating the exposure of interest from the population while distribution of other risk factors in the population remain constant. This means that 85% of the cases of a disease could be avoided if the factor causally related to increase risk is eliminated and that the distribution of other risk factors remains unchanged. Q9. The death rates from various conditions are often compared across geographic areas. These comparisons are usually based on directly age-standardized mortality rates. Which of the following best describes what is meant by an age-standardized rate created by the direct method? (Choose one best answer and provide rationale). (TWO POINT) Q12. The strength of an association is one of the criteria for

Writing Project Research Paper Example | Topics and Well Written Essays - 2250 words

Writing Project - Research Paper Example The sport has received immense support globally and is popularly known in Europe as majority of the racings are done within the continent. However, over years, the scope of the sports has evolved as today racing is being held in different countries like United States and other continents. The sports has garnered support among different fans who in most occasions views the racings conducted by renowned sports men through such media devices like televisions which today is available at every corner of the world (Baer, 1995). This paper therefore, examines formula one racing as an aspect of motorsports. Formula one racing has led to major changes in the history of sports racing making the sports to be competitive globally. The idea behind formula one can be traced back to1946 where races concentrating on cars were first brought up and the idea to find the best drivers on the planet initiated. However, this did not come to be immediately until 1950 when the first motorsport race was held. However, after the first motorsports, there were several motorsports championship which were held but they were not given much consideration as there was nothing to be profited from the races conducted. In 1983, the sport was deemed to be unprofitable as drivers were not benefiting from the race leading to shortages on the people who were participating on the race (Baer, 1995). Likewise, most participants in the sports were using their own cars and they solely bore the costs related to the races like vehicle repair and the usual wear and tear. Interestingly, different cars models which were being u sed for racing purposes back then included Alfa Romeo, Ferrari, Meserati and the Mercedes benz (Formula 1Â ®. (n.d.), 2015). Over the years the different car manufactures which were being used in formula one race made technological advancements on their cars. This included new engine and tire types which gave