Understanding Risk Ratio Calculation
The Risk Ratio (RR), also known as the Relative Risk, measures how much the risk of an event (like a disease) is increased or decreased in an exposed group compared to a non-exposed group.
Risk Ratio Definition
It is calculated as the ratio of the incidence of the disease in the exposed group to the incidence of the disease in the non-exposed group.
- Incidence in Exposed (Ie): The proportion or rate of new disease cases among individuals who were exposed to a potential risk factor.
- Incidence in Non-Exposed (Ine): The proportion or rate of new disease cases among individuals who were not exposed to the risk factor.
Risk Ratio Formula
The formula is represented using LaTeX as:
$ \text{Risk Ratio (RR)} = \frac{I_e}{I_{ne}} $
Why Other Options Are Incorrect
- Option 2 is incorrect because it represents the inverse of the Risk Ratio.
- Option 3 describes the Risk Difference (RD) or Absolute Risk Reduction, calculated as $ \text{RD} = I_e - I_{ne} $.
- Option 4 describes the Odds Ratio (OR), which is the ratio of odds, not incidence rates.
Therefore, the ratio of the incidence of the disease among exposed and the incidence among non-exposed correctly represents the Risk Ratio.
Important Questions from Statistics
Match the following:
(a) Marginalist Revolution (i) Samuelson (b) Multiplier-Accelerator model (ii) J. R. Hicks (c) IS-LM curves (iii) Jevous (d) Real Business Cycle (iv) Robert J. Borro Choose the correct option from those given below:
As per the SRS Bulletin of September 2017, the estimated death rate for Kerala is 7.6, while for Bihar it is 6. From these data which is the correct inference to draw?
Arrange the following States in descending order according to Maternal Mortality Ratio (MMR) as per the Special Bulletin of SRS, May, 2018:
(i) Assam
(ii) Bihar
(iii) Madhya Pradesh
(iv) Uttar Pradesh
Choose the correct answer from the code given below :
Which of the following statements is true for the Indian economy according to the World Bank figures for 2017?
Harrod's Growth model is given as under:
\(\begin{array}{ll} \mathrm{S}_{\mathrm{t}}=\alpha \mathrm{Y}_{\mathrm{t}} & 0<\alpha<1 \\ \mathrm{I}_{\mathrm{t}}=\beta\left[\mathrm{Y}_{\mathrm{t}}-\mathrm{Y}_{\mathrm{t}-1}\right] & \beta>0 \\ \mathrm{~S}_{\mathrm{t}}=\mathrm{I}_{\mathrm{t}} & \end{array}\)
where S t = Savings, Y t = Income, l t = Investment, t = time
In this model for economic growth, the condition for economic growth is
