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?
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