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Incidence rate and relative risk are two different measurements used in epidemiology to study illness/disease in specified populations.
Incidence rate refers to the number of new cases of a condition in a defined (specified) group or population. It is often expressed as a ratio. For example, if there are 1000 people and 14 of them develop a condition, the incidence rate is 14 per 1000 or 1.4%
Relative risk is a measurement that indicates probability of cause. In other words, how likely is it that a place, person or agent is responsible for causing disease/illness.
Before you can calculate relative risk, you must first calculate an attack rate on different groups. An attack rate refers to the number of people exposed to an illness compaired to those who actually became sick. To calculate the attack rate, you divide the number of people ill by those who were exposed, and then multiply by 100.
To then calculate the relative risk, you divide the attack rate of those sick by the attack rate of those who are not sick.
The closer the relative risk is to 1.0, the less likely it is the cause of disease.
The higher the relative risk, the more likely it is that it is the cause of disease.
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What is the difference between absolute deviation and relative deviation?
absolute deviation is a difference between say two numbers. The result has the same units as the two numbers have. Relative deviation is a ratio and so it is a pure number without any units.
What is the difference between ratio estimation and regression estimation?
diferece between ratio and regression
Difference between adjusted and unadjusted odds ratio?
An odds ratio is the difference between the number of times that something happens and does not happen. An unadjusted odds ratio is a guess between what could or could not happen.
What is the difference between odds ratio and Chi square?
none
What is the difference between a data table and a ratio table?
A ratio table is more like a pattern, where a data table has graphs.
Difference in Relative risk and risk ratio?
There is no difference between the two. Relative risk is the same as relative ratio. Commonly abbreviated as RR, relative risk/ratio is measure of absolute risk in one population as a proportion of absolute risk in another. It is a measure of the strength of association.
What is the difference between absolute deviation and relative deviation?
absolute deviation is a difference between say two numbers. The result has the same units as the two numbers have. Relative deviation is a ratio and so it is a pure number without any units.
What is the difference density and relative density?
DENSITY : density is the ratio of mass and volume of the substance density=mass/volume RELATIVE DENSITY : It is the ratio of density of a substance to the density of water
What is the difference between density and relative density?
Density is the mass of a substance divided by its volume, typically measured in g/cm3 or kg/m3. Relative density, also known as specific gravity, compares the density of a substance to the density of a reference substance, usually water. Relative density has no units because it is a ratio.
The relationship between the angle of incidence and the angle of refraction is known as law?
Snell's Law describes the relationship between the angle of incidence and the angle of refraction for light passing through different mediums. It states that the ratio of the sine of the angle of incidence to the sine of the angle of refraction is constant for a given pair of media.
What is the difference between ratio estimation and regression estimation?
diferece between ratio and regression
The ratio of the half unit difference in prcision to the entire measure expressed as a percent?
relative error.
What is the difference between a ratio and a proportion?
a ratio is a comparison between 2 things and a proportion is a ratio on each side of the = sign
Difference between adjusted and unadjusted odds ratio?
An odds ratio is the difference between the number of times that something happens and does not happen. An unadjusted odds ratio is a guess between what could or could not happen.
How do you compare the angle of incidence and the angle refraction?
The angle of incidence is the angle between the incident ray and the normal to the surface, while the angle of refraction is the angle between the refracted ray and the normal to the surface. These angles are related by Snell's Law, which states that the ratio of the sine of the angle of incidence to the sine of the angle of refraction is equal to the ratio of the refractive indices of the two media the light is traveling through.
What is the difference between a ratio and a prportion?
a ratio is a fraction of two numbers a proportion is = fractions
The relationship between the angle of incidence and the angle of refraction is known as law.?
The relationship between the angle of incidence and the angle of refraction is known as Snell's Law. This law states that the ratio of the sine of the angle of incidence to the sine of the angle of refraction is equal to the ratio of the speeds of light in the two different mediums. It describes how light waves change direction when crossing from one medium to another.
