there were 100 new cases of syphilis last year in a given population of 100,000 people....

there were 100 new cases of syphilis last year in a given population of 100,000 people. 500 people in this population already had syphilis. the incidence of syphilis in this population is?

Expert Solution

Incidence is defined as the number of new cases appeared, which are affected with the disease to the total number of the people who are diagnosed during a given time period. Incidence risk is always calculated during a given time period like per month, per year. It generally gives the value in terms of fraction like (out of 100000 ) how many are at risk of developing disease. Incidence risk can further be classified to calculate specific or particular measures like gender, age e.t.c.

It is different from the prevalence because in prevalence it counts all the cases who are alive till now and are affected it does not gives the data during a given time period like in the question it is given that 500 are already affected with syphilis and 100 are added last year so it adds both the counts and considered as whole. It gives more meaning to the data because it includes all the cases.

So the incidence of syphilis in the population is 100/100000 = 0.001

Here 100 is taken in the numerator because they are the new cases reported during the last year (a given time period) out of 100000 and 500 is neglected because they are not the current cases.They will be used in prevalence.

gladiator answered 2 years ago

Scenario 2: In a city of 100,000 people, there were last year 1000 deaths and 1500...

Scenario 2: In a city of 100,000 people, there were last year 1000 deaths and 1500 live births (none were multiple births), of which 1200 infants survived to see their first birthday. Three mothers died in childbirth. Using the Week 3 PowerPoint for definitions, calculate the answers to the questions below. (http://adph.org/healthstats/assets/Formulas.pdf ) Infant mortality ratio (2 points): Crude death rate (2 points): Crude birth rate (2 points): What possible conclusions could you draw from these rates, about the overall...

The number of new cases of a disease in a given population during a given period...

The number of new cases of a disease in a given population during a given period of time is called __________. A) Virulence B) Morbidity C) Prevalence D) Incidence ____5. Epidemiologists are interested in learning about ____________________ . A) The causes of diseases and how to cure or control them B) The frequency and geographic distribution of diseases C) The causal relationships between diseases D) How microbes move in the environment. _____6. An epidemic will die out when the basic...

Assume for a given year there is a population of 1,725,000 people, 345,000 of whom are...

Assume for a given year there is a population of 1,725,000 people, 345,000 of whom are 65 years younger. There are 22,425 live births, 13,800 deaths in all age groups from all causes, 10,350 deaths for those 65 and above, 4000 deaths from heart disease, 7000 deaths from cancer, 95 deaths among infants less than 28 days, 140 deaths among infants less than one year (including those < 28 days), and 6 deaths among pregnant mothers. Assume that there 40,000...

A team of researchers found that age distributions in a population of 100,000 people was not...

A team of researchers found that age distributions in a population of 100,000 people was not Normal. However, after they took a large number of simple random samples, each with (N=100), they observed that the sampling distribution of mean tended toward Normality

With normal distribution given a number of cases, for this example let us use 100 cases....

With normal distribution given a number of cases, for this example let us use 100 cases. How do you find how many fall in between Z scores. What are the steps? For this example let's say Z scores -1.5 to +1.5 . I am interested in steps and explanation that can be applied to many other similar problems.

The following transactions were made by Ruby Inc. last year: Issuance of common stock $100,000 Dividends...

The following transactions were made by Ruby Inc. last year: Issuance of common stock $100,000 Dividends paid to the company's stockholders 2,000 Depreciation expense 6,000 Repayment of principal on bonds 40,000 Proceeds from sale of the company's used equipment 39,000 Purchase of land 230,000 Based solely on the above information, net cash flow from financing activities for the year on the statement of cash flows would be: a.($67,000). b.($150,000). c.$29,000. d.$58,000.

If you were given a large data set, such as the sales over the last year...

If you were given a large data set, such as the sales over the last year of our top 100 customers, what might you be able to do with these data? What might be the benefits of describing the data?

The population of the earth in the 1500s was estimated to be 100 million people. In...

The population of the earth in the 1500s was estimated to be 100 million people. In 1990 the world population was estimated at 2,600 million. Assuming that the growth rate is proportional to the population at each moment, estimate the year in which the population is 3,000 million.

Corporation has provided the following cost data for last year when 100,000 units were produced Raw...

Corporation has provided the following cost data for last year when 100,000 units were produced Raw materials: $200,000 Direct Labor: $100,000 Manufacturing Overhead: $200,000 Sell & Admin Expense: $150,000 All costs are variable except for $100,000 of manufacturing overhead and $100,000 sell & admin expense. There are no beginning or ending inventories. If the selling price is $10 per unit, the net operation income from producing and selling 110,000 units would be: A) $560,000 B) $385,000 C) $405,000 D) $450,000

In a population of 100 individuals, we have 25 people that are homozygous AA, 50 people...

In a population of 100 individuals, we have 25 people that are homozygous AA, 50 people that are heterozygous Aa, and 25 people that are homozygous aa. How many A alleles are in the homozygous aa group?

Question