A group of researchers is conducting a clinical trial to determine if a new medication is useful in preventing osteoporosis in older adults. They contacted 15,000 individuals (10,000 men, 5,000 women) to participate in the trial. As part of their screening, they identified 2,400 older adults (2,000 men, 400 women) who already had osteoporosis. The remaining subjects entered the trial and were equally divided into treatment and placebo groups, with an equal number of men and women in each group. Of those in the treatment group, 600 (400 men, 200 women) developed osteoporosis after 5 years of follow-up while 1500 (1000 men, 500 women) developed osteoporosis during the same period in the placebo group. (Clue: Describe these rates as per 1,000 persons. Decimal to at least the tenth.) 1. What was the prevalence of osteoporosis at the screening? 2. What was the incidence of osteoporosis during the 5-year study 3. What was the incidence of osteoporosis among women during the 5-year study?

A group of researchers is conducting a clinical trial to determine if a new medication is useful in preventing osteoporosis in older adults. They contacted 15,000 individuals (10,000 men, 5,000 women) to participate in the trial. As part of their screening, they identified 2,400 older adults (2,000 men, 400 women) who already had osteoporosis. The remaining subjects entered the trial and were equally divided into treatment and placebo groups, with an equal number of men and women in each group. Of those in the treatment group, 600 (400 men, 200 women) developed osteoporosis after 5 years of follow-up while 1500 (1000 men, 500 women) developed osteoporosis during the same period in the placebo group. (Clue: Describe these rates as per 1,000 persons. Decimal to at least the tenth.) 1. What was the prevalence of osteoporosis at the screening? 2. What was the incidence of osteoporosis during the 5-year study 3. What was the incidence of osteoporosis among women during the 5-year study?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 27PPS

See similar textbooks

Similar questions

A team physician has determined that of all the athletes who were treated for minor back pain, 72% responded to an analgesic, 59% responded to a muscle relaxant, and 44% responded to both forms of treatment. What percent of the athletes who were treated responded to the muscle relaxant but not to the analgesic? What percent of the athletes who were treated did not respond to either form of treatment?
Of the people in Canada, 44% have received two doses of Covid-19 vaccine, 38% have received onedose of Covid-19 vaccine, and the remainder have not received any dose of Covid-19 vaccine. Notethat the level of risk for Covid-19 infection are high and low risks. Of those who have received twodoses of Covid-19 vaccine, 8% are at high risk for Covid-19 infection, whereas 20% of those who havereceived one dose of Covid-19 vaccine and 60% of those who have not received any dose of Covid-19vaccine are at high risk for Covid-19 infection. Suppose that we randomly select one person inCanada. What is the probability that the persona) is at low risk for Covid-19 infection, given that person has received two doses of Covid-19 vaccine?b) is at low risk for Covid-19 infection?c) do not receive any dose of Covid-19 vaccine, given that that person is at low risk for Covid-19infection
In a survey of 52 students in the cafeteria, it was found that 15 were commuters. If one-quarter of the female students and one- third of the male students in the survey were commuters, then how many of males were surveyed?
A study conducted by researchers was designed "to determine if application of duct tape is as effective as cryotherapy in the treatment of common warts." The researchers randomly divided 6969 patients into two groups. The 3535 patients in group 1 had their warts treated by applying duct tape. The 3434 patients in group 2 had their warts treated by cryotherapy. Once the treatments were complete, it was determined that 6969% of the patients in group 1 and 8585% of the patients in group 2 had complete resolution of their warts. The researchers concluded that cryotherapycryotherapy is significantly more effective in treating warts than duct tapeduct tape. Complete parts (a) through (d) below.(a) What is the research objective? A.To determine if duct tape is as effective as cryotherapy in the treatment of warts B.To determine if cryotherapy is as effective as duct tape in the treatment of warts C.To determine if cryotherapy is effective in the treatment of warts D.To determine if…
The public health authorities of a small town have divided the population into three categories: covid-negative, covid-positive, and hospitalised. After performing regular, extensive tests, they have observed that in each successive week: Among those who are negative, 95% remain so, 4% become positive, and 1% need to be hospitalised. Among those who are positive, 75% recover and become negative, 20% stay positive, and 5% need to be hospitalised. Among those who are hospitalised, 60% recover and become negative, 30% are released from hospital but remain positive, and 10% remain hospitalised. (a) After representing the population in a given week as a column vector v=[n;p;h], where n,p, and h represent the number of people in the population who are negative, positive, and hospitalised respectively, write down a matrix M for which[n′,p′,h′]=M[n;p;h], where[n′,p′,h′] represents the column vector of negative, positive, and hospitalised members of the population in the following…
The National Institute of Mental Health published an article stating that in any two-year period, approximately 10.5percent of American adults suffer from depression or a depressive illness. Suppose that in a survey of 150 people in a certain town, eight of them suffered from depression or a depressive illness. If you were conducting a hypothesis test to determine if the true proportion of people in that town suffering from depression or a depressive illness is lower than the percent in the general adult American population, what would the null and alternative hypotheses be?
After attending a church cookout, a number of the attendees are admitted to the emergency room with nausea, vomiting, and diarrhea. After discovering all the individuals admitted to the ER consumed the egg salad at the event, the leftover egg salad was tested and found to be positive for salmonella. If 83 individuals consumed the egg salad and 49 individuals were admitted to the ER with salmonella, what was the cumulative incidence of salmonella assuming that the 49 individuals admitted to the ER were the only ones to be affected by the bacteria? 0.041 0.059 0.410 0.590