The following table shows the results of a study where participants received either a statin or a placebo and they were observed for the outcome of stroke.  Stroke No stroke  Statin1090100 Placebo4555100  55145200 Calculate the event rate of the treatment group.Enter your answer in the text box below.

The following table shows the results of a study where participants received either a statin or a placebo and they were observed for the outcome of stroke.  Stroke No stroke  Statin1090100 Placebo4555100  55145200 Calculate the risk difference.Enter your answer in the text box below.

Time left 0:07:23Question 8Not yet answeredMarked out of 1.00Flag questionTipsQuestion textA trial examining a new intervention and measuring the outcome of stroke had a final result of:RR 1.2, 95%CI 0.9 to 1.5.Select the best interpretation of this result.Question 8Answera.The intervention increased the average risk of stroke by 20% and the real result is likely to lie between a 10% decrease and a 50% increase. The result is not significant.b.The intervention increased the average risk of stroke by 20% and the real result is likely to lie between a 10% decrease and a 50% increase. The result is significant.c.The intervention decreased the average risk of stroke by 20% and the real result is likely to lie between a 10% increase and a 50% decrease. The result is not significant.d.The intervention decreased the average risk of stroke by 20% and the real result is likely to lie between a 10% increase and a 50% decrease. The result is significant.

True or False: The formula for a rate is the number of existing cases of the disease outcome divided by the number of people studied, with a mention of the time period under observation.1 pointFalseTrue

A study reports a mortality rate of 6% in the experimental group and 10% in the control group. Which of the following statements is correct?Question 4Select one:a.None of options are correctb.The risk difference is 4%c.The RR is approximately 1.67d.The number needed to treat is 10e.The incidence of death is 6%

The frequency distribution of blood groups of 187 people is given. A person is selected at random. Calculate the probability that the randomly selected person has O blood group. Blood Group Frequency: A: 84 B: 58 AB: 15 O: 30 a person is selected at random. Calculate the probability that the rundrede selected person has O blood group A.The probability that the randomly selected person has O hhs gong 0.0642 B. The probability obability that the randomly selected person has O blood group is 0.6442 C. The probability that the randomly selectest person has O Mood group is 0.5742 D. The probability that the tandomly selected person has O blocal group s 0.4234